WP Mail SMTP by WPForms - The Most Popular SMTP and 电邮日志 Plugin

WordPress 电子邮件 SMTP 寄件插件 Having problems with your WordPress site not sending emails? You're not alone. Over 3 million websites use WP Mail SMTP to send their emails reliably. 我们的目标是让电子邮件的递送变得简单而可靠。我们希望确保您的邮件能够送达收件箱。 WP MAIL SMTP 通过正确配置 WordPress 在发送邮件时使用的 SMTP 提供程序来修复邮件的可达性。 最重要的是，我们简单易用的设置向导和详细的文档能指导您完成整个过程。 WP Mail SMTP is free and has everything you need to reliably send your WordPress emails! WP Mail SMTP Pro unlocks even more powerful features like email logging, advanced email reporting and stats, backup connections, email alerts, smart conditional routing, and much more. 什么是 SMTP？ SMTP（简单邮件传输协议）是发送电子邮件的行业标准。正确的 SMTP 配置有助于通过使用身份验证来提高电子邮件的传递性。 Gmail、Yahoo、Office 365 和 Zoho 等流行的电子邮件客户端都在不断地与垃圾邮件发送者进行着斗争。他们关注的问题之一是，电子邮件是否真实的来自其声称的发件地址。 如果没有正确的身份验证，泽电子邮件会进入垃圾邮件文件夹，更糟糕的甚至根本无法送达。 这对于很多 WordPress 站点来说是一个问题，因为默认情况下，WordPress 使用 PHP MAIL 函数来发送 WordPress 或其余联系表单插件生成的邮件，如WPForms 联系表单插件。 问题是大多数主机服务没有为 PHP 的邮件传递正确配置其服务器。 两者结合会导致 WordPress 的邮件无法送达。 WP Mail SMTP 如何工作？ WP Mail SMTP plugin easily resolves email delivery problems by improving and changing how your WordPress site sends email. We reconfigure the wp_mail() function to either use proper SMTP host credentials or leverage a built-in SMTP mail provider. 当使用我们集成的内置 SMTP 邮件提供程序（推荐）时，电邮将直接使用提供程序的 API 进行发送。这意味着即使您的网站主机被屏蔽了 SMTP 端口，您的邮件仍然可以成功发送。 This helps you fix all WordPress not sending email issues. WP Mail SMTP 插件包含许多不同的 SMTP 设置选项：

1. SendLayer (#1 Recommended)
2. SMTP.com (推荐)
3. Brevo (formerly Sendinblue) SMTP (Recommended)
4. Mailgun SMTP
5. SendGrid SMTP
6. Postmark SMTP
7. SparkPost SMTP
8. Gmail SMTP (Gmail, Google Workspace, G Suite)
9. Microsoft SMTP（Outlook.com 和 Office 365） [Pro]
10. Amazon SES SMTP [Pro]
11. Zoho Mail SMTP [Pro]
12. 所有其他 SMTP

对于大多数选项，您可以为发出的邮件指定“发件人名称”和“邮件地址”。 谷歌翻译：我们决定将其全部集于一身，而不是让用户为不同的 SMTP 提供商使用不同的 SMTP 插件和工作流程。 这就是使 WP Mail SMTP 成为 WordPress 的最佳 SMTP 解决方案的原因。 SendLayer SendLayer is our #1 recommended transactional email service. Its affordable pricing and simple setup make it the perfect choice for sending emails from WordPress. It also has open and click tracking, email logs, and email list management. SendLayer is the best choice if you want a mailer that's reliable, fast, and easy to set up. You can send hundreds of emails for free when you sign up for a trial. Read our SendLayer documentation for more details. SMTP.COM SMTP.com 是我们推荐的付费电子邮件服务。 SMTP.com 拥有超过 22 年的电子邮件传递可靠经验，其存在的时间几乎与电子邮件本身一样悠久。其被互联网供应商称为互联网上最可靠的邮件传递服务之一。 其简单的集成过程让您在几分钟内就可以开始发送邮件，并从它们多年的经验中受益。SMTP.com 在前 30 天为用户提供 50,000 封免费电子邮件额度。 阅读我们的SMTP.com 文档以了解更多信息。 Brevo (formerly Sendinblue) SMTP Brevo is a recommended transactional email service. 他们为全球 80,000 多家成长中的企业提供服务，每天发送超过 3000 万封电子邮件。 Their email deliverability experts are constantly at work optimizing the reliability and speed of their SMTP infrastructure. Brevo provides users 300 free emails per day. Read our Brevo documentation for more details. Mailgun SMTP Mailgun SMTP 是一个流行的 SMTP 服务提供商，允许您发送大量的电子邮件。他们每月提供 5,000 封免费邮件的发送额度，为期 3 个月。 WP MAIL SMTP 插件提供了与 MailGun 的原生集成。您所要做的就是连接您的 MailGun 账户，这将会提高您的电子邮件可达性。 阅读我们的Mailgun 文档以了解更多信息。 SendGrid SMTP SendGrid 提供有免费的 SMTP 计划，您可以使用它每天发送 100 封邮件。通过我们的原生 SendGrid SMTP 集成，您可在 WordPress 站点上轻松安全地设置 SendGrid SMTP。 阅读我们的SendGrid 文档以了解更多信息。 Postmark SMTP Send emails securely using your Postmark account with our API integration. You can sign up for a free trial without a credit card, which allows you to send up to 100 emails per month. Read our Postmark documentation for more details. SparkPost SMTP SparkPost is a transactional email provider that's trusted by big brands and small businesses. It sends more than 4 trillion emails each year and reports 99.9% uptime. You can get started with the free test account that lets you send up to 500 emails per month. Read our SparkPost documentation for more details. Gmail SMTP (Gmail, Google Workspace, G Suite) Often bloggers and small business owners don't want to use third-party SMTP services. Well you can use your Gmail or Google Workspace (also known as G Suite/Google Apps) account for SMTP emails. 谷歌翻译：这允许您使用专业电子邮件地址并改善电子邮件的可传递性。 与其他 Gmail SMTP 插件不同，我们的 Gmail SMTP 选项使用 OAuth 来验证您的谷歌账户，使您的登录信息 100%安全。 Our plugin also offers the "One-Click Setup" option, which allows you to start sending emails from your Gmail account with just a few clicks. It eliminates the need to manually configure your own Google App, which is a technical and time-consuming process. 阅读我们的Gmail 文档以了解更多信息。 Microsoft SMTP (Outlook.com and Office 365) Many businesses use Outlook.com or Microsoft 365 to power their email. Our Microsoft mailer integration allows you to use your existing Outlook.com or Microsoft 365 account to send emails from WordPress for better deliverability. Read our Outlook and Microsoft 365 documentation for more details. Amazon SES SMTP 高级或技术用户可以通过 Amazon SES 邮件程序利用 Amazon AWS（Amazon Web Services）的功能。通过此集成，您可以以合理的速率发送大量的邮件。 阅读我们的SendGrid 文档以了解更多信息。 Zoho Mail SMTP 使用您的个人或企业 Zoho Mail 账户发送电子邮件，同时保证您的登录信息安全。 阅读我们的Zoho Mail 文档以了解更多信息。 其他 SMTP WP Mail SMTP 插件可以用于常见的电子邮件服务如 Gmail、Yahoo、Outlook、Microsoft Live，也可用于其他提供 SMTP 的电子邮件服务。 您可以设置以下选项。

• 指定一个 SMTP 主机。
• 指定一个 SMTP 端口。
• 选择 SSL / TLS 加密。
• 是否选择使用 SMTP 身份验证。
• 指定 SMTP 用户名和密码。

要查看热门服务的推荐设置以及故障排除提示，请查看我们的SMTP 文档。 One-Click Migration Want to switch from your old SMTP plugin to WP Mail SMTP? We made it easy for you to migrate your SMTP settings in one click! WP Mail SMTP will automatically detect your existing SMTP plugin (Easy WP SMTP, FluentSMTP, etc) when you run our easy Setup Wizard. Just click Import to copy your settings over. Our one-click migration tool supports all of these plugins:

• Easy WP SMTP
• FluentSMTP
• Post SMTP Mailer
• SMTP Mailer
• WP SMTP

WP Mail SMTP 专业版 除了原生的微软，亚马逊 SES 和 Zoho 邮件集成，WP 邮件 SMTP 专业版还提供了许多其他强大的功能和服务。 Click here to purchase WP Mail SMTP Pro now! Email Log 通过电邮日志，您可以记录和查看从您的站点发送的所有邮件。电邮日志可帮助您存储电子邮件以供记录，审阅发出的邮件以及在站点开发过程中进行调试。 But that's just the beginning. Our powerful WordPress email logs unlock extra tools to help you measure email engagement and improve email deliverability: Email Log Details Each Email Log entry includes a lot of useful information about the email, including the subject, sender, recipients (TO, CC and BCC), email content, email headers, open&click tracking stats, delivery status, which WordPress plugin sent the email, and more! Resend Emails You resend any email or forward it to one or more email addresses, right from your email log. From the overview page, you can also resend multiple emails in bulk. This is an awesome way to resend emails that failed or forward important emails to an alternative email address. Store Email Attachments WP Mail SMTP lets you store all of the email attachments that are sent from your WordPress site. That makes it easy to review an attachment or archive it locally. Export Email Logs Easily export your WordPress email logs to CSV, EML, or Excel. You can filter the email logs before you export and only download the data you need. This feature lets you easily create your own deliverability reports. You can also use the data in 3rd party dashboards to track deliverability along with your other website statistics. Print Emails Once you've activated email logging, any individual log file can be printed in an easy-to-read format. If you want to archive an email log digitally, it's easy to export it to a PDF document too. Email Reports Email reports make it easy to track deliverability and engagement at-a-glance. Your open and click-through rates are grouped by subject line, making it easy to review the performance of campaigns or notifications. The report also displays Sent and Failed emails each week so you can spot any issues quickly. You'll also see an email report chart right in your WordPress dashboard. Weekly Email Summary Get statistics about WordPress emails sent directly into your inbox. Our weekly emails reveal how many emails are being sent from your WordPress site, and which ones are getting opens and clicks. The Summary also shows you deliverability statistics at-a-glance so you can spot any issues without logging into WordPress. Track Email Opens and Clicks Wondering if your important emails were actually opened, or if any links in the email were clicked? Our email log allows you view open and click tracking stats for your WordPress emails and our Email Reports feature groups these stats by subject, so you can analyze their performance. Email Alerts Get instantly notified about failed emails! If your site's mailer or SMTP service stops sending your emails, you'll immediately receive a notification. Choose from several helpful alert methods, including:

• Email Notifications
• Slack Notifications
• SMS/Twilio Notifications
• Webhook Notifications

In combination with Email Logging and Email Resend, Email Alerts let you ensure that no important email will ever be lost. Backup Connection WP Mail SMTP Pro allows you to configure multiple mailer providers. The main configuration will be your Primary Connection, and you can set another as your Backup Connection. If an email fails to send via your Primary Connection, WP Mail SMTP will automatically route it through your Backup Connection and try to send it again. This means fewer missed emails, even when something goes wrong. Smart Conditional Routing Smart Routing enables you to send emails through different mailer providers based on custom criteria. Easily configure your Smart Routing conditions using dozens of pre-determined options, including the contents of the email Subject or Message, From or To addresses, or which plugin initiated the email, just to name a few. Using Smart Routing lets you choose the best mailer for each type of email you send. Select a transactional mailer to send out your eCommerce order confirmations, another mailer for your newsletter and marketing emails, and more! Selecting the best mailer for each type of email you need to send will improve your overall deliverability and make sure your emails arrive in users' inboxes. 管理 WordPress 的电邮和通知 管理通知功能让您可以完全控制 WordPress 发送的电子邮件通知。这意味着您可以禁用不同的 WordPress 通知邮件。不想在创建新用户时收到邮件？没问题，将其关闭。 WordPress Multisite WordPress 多站点网络设置 对于运行多站点网络的用户，我们在网络设置中提供了一个集合的设置位置，可以轻松地为所有站点配置 SMTP，节省您的时间。 Manage Multisite Email Logs Easily WP Mail SMTP makes it easy for Network Admins to view and manage email logs for subsites. You can access all of your deliverability information from the Network Admin dashboard and quickly switch between subsites. That makes it easy to review email logging data for all subsites on one centralized page. 专业支持 We provide limited support for the WP Mail SMTP plugin on the WordPress.org forums. Access to our world class one-on-one email support is available to WP Mail SMTP Pro users. 白手套设置 我们的白手套设置服务是一个极佳的选择，任何人都可以从中受益。无论您是没有时间，还是觉得有点力不从心，我们都会为您提供服务。 有我们来为您设置好一切，您可以坐下来放松。白手套设置包括 WP MAIL SMTP 插件的安装及设置，对您的 DNS 进行配置调整以确保电子邮件域名验证正确设置，对 SMTP.com 货 Mailgun 进行设置，然后到最终测试以确认一切顺利完成。 安全 WP Mail SMTP 团队非常重视安全性。该插件不仅遵循所有安全性最佳做法，而且我们提供了多种选择来确保您的网站安全。

• Direct SMTP mailer integrations (recommended), such as SMTP.com, Brevo (formerly Sendinblue), Mailgun, SendGrid, Postmark and SparkPost, use the official provider APIs. This means you never enter your username or password in the plugin settings and these credentials are not stored in the database. Instead, we use tokens or API keys which are much more secure.
• When using Other SMTP mailer, we provide the option to insert your password in your wp-config.php file, so it's not visible in your WordPress settings or saved in the database.

Languages We know that majority of people do not speak English, so we professionally translated WP Mail SMTP and WP Mail SMTP Pro into the following languages:

• Spanish (Spain),
• German,
• Portuguese (Brazil),
• Italian,
• French,
• Japanese,
• Polish,
• Dutch,
• Russian,
• Turkish

If you have one of these languages configured in your WordPress admin area, then WP Mail SMTP's user interface will use that language as well. 贡献者 WP Mail SMTP plugin was originally created by Callum Macdonald. It is now owned and maintained by the team behind WPForms - the best drag & drop form builder for WordPress. 您可以尝试使用一下免费版的 WPForms 插件，亲身体验下为什么 WPForms 很受欢迎。 下一步是什么 如果您喜欢我们的 WP Mail SMTP 插件，那么请考虑看看我们的其他项目。

• OptinMonster - Get more email subscribers with the most popular conversion optimization plugin for WordPress.
• WPForms - #1 drag & drop online form builder for WordPress (trusted by 5 million sites).
• AIOSEO - The original WordPress SEO plugin to help you rank higher in search results (trusted by over 3 million sites).
• MonsterInsights - See the stats that matter and grow your business with confidence. Best Google Analytics plugin for WordPress.
• SeedProd - Create beautiful landing pages with our powerful drag & drop landing page builder.
• Smash Balloon - 最佳 WordPress 社交 feeds 插件 - 在 WordPress 中显示社交媒体内容，无需代码。
• WPCode - must have WordPress code snippet management plugin to help you future-proof website customization (trusted by 1.5 million sites).
• Duplicator - popular WordPress backup and migration plugin used by over 1 million websites.
• WP Simple Pay - #1 Stripe payments plugin for WordPress. Start accepting one-time or recurring payments without a shopping cart.
• PushEngage - 利用领先的 Web 推送通知插件在访客离开您的网站后与他们联系。
• RafflePress - 增加流量和社交粉丝的最佳 WordPress 赠品和禁赛插件。
• TrustPulse - 添加实时社交证明通知，以提高您的商店转换率，最高可达 15%。
• SearchWP - The most advanced custom WordPress search plugin to improve WordPress search quality.
• AffiliateWP - #1 affiliate management plugin for WordPress. Add a referral program to your online store.
• Easy Digital Downloads - The best WordPress eCommerce plugin to sell digital products (eBooks, software, music, and more).
• WPCharitable - Top-rated WordPress donation and fundraising plugin for WordPress.

Visit WPBeginner to learn from our WordPress Tutorials and about the best WordPress plugins.

3.11.1 - 2024-01-22

• Fixed: Setup Wizard texts.
• Fixed: Compatibility for List-Unsubscribe header.

3.11.0 - 2023-12-13

• Added: Filter to customize the capability required for managing the plugin.
• Changed: Hide test tab movement notice for new users.
• Changed: Improved keyboard navigation styles for the Setup Wizard.
• Changed: Removed WPMailSMTP\Admin\PluginsInstallUpgrader class and switched to the WordPress Core Plugin_Upgrader class.
• Changed: The "From email" dropdown to the input field in the Gmail mailer.
• Fixed: PHP deprecation notices in the Setup Wizard on WordPress 6.4 and above.
• Fixed: Compatibility issue with Action Scheduler lower than 3.3.0.

3.10.0 - 2023-11-08

• Added: Filter that allows to use self website Google OAuth redirect URL.
• Changed: Improve plugin settings UI, by changing checkboxes to toggles and some dividers cleanup.
• Changed: Replaced moment.js library to the WP Core's bundled one.
• Fixed: Translation strings on the Dashboard widget.

3.9.0 - 2023-08-30

• Changed: Moved the Email Test tab from the settings page to the tools page.
• Changed: Removed Sendinblue SDK library because it was deprecated.
• Changed: Mailgun API instructions.
• Fixed: Debug Event details popup scrolling.
• Fixed: Conflict with other plugins (Alt Manager) that made the WP Plugins install page unusable.

3.8.2 - 2023-07-20

• Changed: Improved notifications formatting and styles.
• Changed: Sendinblue rebranded to Brevo.
• Fixed: Explicitly set "Content-Type" header for the HTML test email.

3.8.0 - 2023-04-26

• IMPORTANT: Support for PHP 5.6, 7.0, and 7.1 has been discontinued. If you are running one of those versions, you MUST upgrade PHP before installing or upgrading to WP Mail SMTP v3.8. Failure to do that will disable WP Mail SMTP functionality.
• Changed: Updated Moment.js library to 2.29.4.
• Changed: Removed unneeded sodium_compat library.
• Fixed: Email address with apostrophes in the Email Test page.
• Fixed: Review request notice display on subsites admin area in WP Multisite installation.
• Fixed: Setup Wizard playing UA anthem for certain WP sites.

3.7.0 - 2022-12-15

• Changed: Improved Action Scheduler data cleanup on plugin uninstall.
• Changed: Improved performance for database table validation checks.
• Fixed: Tasks meta database table error.
• Fixed: Gmail mailer authorization error if the oAuth app already had other non mail scopes attached.
• Fixed: Email address validation in Setup wizard.
• Fixed: Removed unneeded composer libraries autoload code.
• Fixed: Conflict detection for plugin Sendinblue - WooCommerce Email Marketing (v3.0+)

3.6.1 - 2022-10-06

• Added: The wp_mail function call backtrace to the Debug Events if the "Debug Email Sending" option is enabled.
• Added: Plugin's DB tables re-creation process in WP Site Health.
• Added: Debug Events retention period setting.
• Changed: Updated the list of conflicting plugins (added Zoho Mail).
• Changed: Improved conflicting plugins' admin notices (display multiple at once)
• Changed: Switched to the WP Core function is_email for verifying email addresses.
• Changed: Improved the detection if wp_mail function is overwritten.
• Fixed: Gmail mailer not using the correct From Email Address in Domain Checker.
• Fixed: Setup Wizard steps navigation, when going backwards.

3.5.2 - 2022-08-17

• Fixed: The check if wp_mail function is overwritten on Windows servers.

3.5.1 - 2022-07-14

• Changed: Removed MailPoet from the list of conflicting plugins.
• Fixed: PHP warning for undefined variable when using the Default (none) mailer.

3.5.0 - 2022-07-14

• Added: Check if wp_mail function is overwritten.
• Added: DB table (wpmailsmtp_tasks_meta) cleanup after scheduled actions execution. Keeps DB size small.
• Changed: Updated the list of conflicting plugins (added Branda and MailPoet).
• Changed: Updated Action Scheduler library to 3.4.2.
• Fixed: SMTP.com mailer email content-encoding.
• Fixed: Dashboard widget graph when there is no email logs data.
• Fixed: Missing Sendinblue email body WP filter.
• Fixed: Chart.js library conflicts with other plugins.

3.4.0 - 2022-04-27

• Added: New transactional mailer: SendLayer integration.
• Changed: Improved Mailgun API error message extraction.
• Changed: Standardized error messages format and improved WP remote request errors extraction.
• Fixed: Lite plugin uninstall actions clearing plugin options while Pro version is active.
• Fixed: Hiding unrelated network admin notices on WP Mail SMTP pages.

3.3.0 - 2022-02-17

• IMPORTANT: Support for WordPress versions 5.1.x or lower has been discontinued. If you are using one of those versions, you MUST upgrade WordPress before installing or upgrading to WP Mail SMTP v3.3. Failure to do that will disable WP Mail SMTP functionality.
• Added: PHP 8.1 compatibility.
• Changed: Updated the list of conflicting plugins (added FluentSMTP and WP HTML Mail).
• Changed: Improved debug error message for the Other SMTP mailer in Debug Events.
• Changed: Updated Action Scheduler library to 3.4.0.
• Changed: Improved Action Scheduler performance.
• Fixed: PHP deprecated notices in Sendinblue library (PHP 7.4+).
• Fixed: DB tables row in Site Health Info section is now private.
• Fixed: Debug Events' screen options visible on general Tools page.
• Fixed: Screen Options right alignment.

3.2.1 - 2021-11-17

• Fixed: PHP 8 compatibility when existing Gmail mailer connection is revoked.

3.2.0 - 2021-11-11

• Added: New transactional mailer - SparkPost integration.
• Added: One-click migration from FluentSMTP plugin.
• Added: Plugin constants integration in Setup Wizard.
• Fixed: Early plugin deactivation issue with activity log plugins.

3.1.0 - 2021-09-28

• Added: New transactional mailer - Postmark integration.
• Added: Support for string attachments (added via PHPMailer object).
• Changed: Improved Email Source detection in Debug Events for WP Core sent emails.
• Changed: Improved uninstall process. It now removes all plugin DB data and tables.
• Fixed: Email Source detection in Debug Events for file paths with backslashes.
• Fixed: Blurry image assets in Weekly Email Summary.
• Fixed: PHP extension mb_strings not polyfilled correctly.
• Fixed: Added missing is_email_sent filters for Sendinblue, Mailgun, and Gmail mailers.
• Fixed: Debug Events double-entry DB save, because of a bug in is_email_sent method for certain mailers.

3.0.3 - 2021-08-09

• Fixed: Weekly Summary Email sending when migration code didn't trigger yet.

3.0.2 - 2021-08-05

• Fixed: Fatal PHP error on WP version 5.2 and lower (missing wp_timezone function).

3.0.1 - 2021-08-05

• Added: Weekly Email Summary - email sending statistics sent to your inbox.
• Added: Debug Events - logging all email sending errors and debug events.
• Added: Quick admin area links.
• Changed: Updated the successful Email Test screen.
• Changed: Updated Action Scheduler library to 3.2.1.
• Fixed: WP core admin spinner for the dashboard widget.
• Fixed: PHP error when objects implementing __invoke() method were used as hook callbacks for admin notices.

2.9.0 - 2021-06-24

• Added: Action Scheduler table to the Tools page.
• Added: Dashboard Widget with total emails sent counter.
• Changed: Notifications design.
• Changed: Sodium Compat library loading improved.
• Fixed: Plugin conflict with plugins that populate $_POST data (Ultimate Addons for Elementor, WishList Member, ...).
• Fixed: Sendinblue WooCommerce Email Marketing plugin conflict admin notice display.
• Fixed: jQuery deprecated notices.
• Fixed: Action Scheduler library loading issue.
• Fixed: Canceled Setup Wizard's OAuth authorization redirecting to the Setup Wizard when connecting via regular plugin settings.
• Fixed: Meta DB table not existing error notices on a WP Multisite subsite.

2.8.0 - 2021-05-06

• Added: WP Site Health status check for the sending domain.
• Added: WP Mail SMTP WordPress admin menu position filter hook.
• Changed: Moved the Email Test tab to the new WP Mail SMTP > Tools page.
• Changed: Updated the list of conflicting plugins.
• Fixed: Removed the empty admin dashboard menu item for the Setup Wizard.
• Fixed: The Setup Wizard conflicting issue with Admin 2020 plugin.
• Fixed: The plugin settings pages not opening when WishList Member plugin was active.

2.7.0 - 2021-03-25

• IMPORTANT: Support for PHP 5.5 has been discontinued. If you are running that version, you MUST upgrade PHP before installing or upgrading to WP Mail SMTP v2.7. Failure to do that will disable WP Mail SMTP functionality.
• Changed: Updated About us plugin page.
• Changed: Improved Domain Check Results section in Email Test tab.
• Changed: Allow the use of different Gmail aliases as From Email address by disabling the Force From Email setting.
• Changed: The Setup Wizard can now be launched via a button in the plugin settings. The Setup Wizard admin dashboard menu item was removed.
• Fixed: WP Multisite subsite admins couldn't remove oAuth connections (in the Gmail mailer).

2.6.0 - 2021-02-04

• Added: New plugin Setup Wizard.
• Added: SendGrid Invalid API key error message and mitigation steps on the Email Test page.
• Fixed: PHP 8 support.

2.5.1 - 2020-10-28

• Fixed: The automatic updates issue with Gmail mailer token refresh.
• Fixed: The 'wp-amil-smtp' typo in a plugin text-domain and a HTML class.

2.5.0 - 2020-10-22

• Added: Other SMTP mailer password encryption/decryption.
• Changed: Gmail mailer suggested steps for invalid_grant error on the Settings > Email Test page.
• Changed: Gmail mailer redirect URI was changed to fix issues with mod_security or redirect blocking plugins/solutions.
• Fixed: Plugin options re-saving with unescaped magic quote characters.
• Fixed: SMTP.com mailer email delivery for certain SMTP servers if attachment's encoded string is too long.

2.4.0 - 2020-09-17

• Added: Prefix all 3rd-party libraries to avoid compatibility issues with other plugins using different versions of the same libraries.
• Changed: Sendinblue SDK library version to 6.4.
• Changed: Google apiclient library version to 2.7.
• Changed: Improve plugin settings input and toggle focus states.
• Fixed: Hide admin bar menu when errors are present and the "Hide Email Delivery Errors" setting is enabled.
• Fixed: CSS sourcemaps warning messages in browser dev tools.
• Fixed: Action Scheduler tasks being registered too early and not getting assigned to the plugin group.
• Fixed: Admin bar CSS asset loading when the admin bar is not showing.
• Fixed: Fatal error on plugin uninstall if ActionScheduler_QueueRunner::unhook_dispatch_async_request method does not exist.
• Fixed: PHP Deprecated notice for base_convert() function usage in the Mailgun mailer.

2.3.1 - 2020-08-20

• Added: A WP Mail SMTP admin bar menu if there is an email delivery error or notifications.
• Added: WordPress 5.5 compatibility.
• Changed: Improve copy button user experience for Gmail Authorized redirect URI option.
• Changed: Email delivery error admin notices are now displayed only on plugin pages.
• Changed: Improve plugin settings UI by hiding certain options if the mailer does not support them.
• Changed: Pepipost API mailer is no longer available for new installs.
• Fixed: WP Site Health check for missing DB tables.
• Fixed: PHP errors caused by Actions Scheduler library used inside the plugin.
• Fixed: PHP error on plugin settings and WP Site Health pages if the plugin mailer option is empty for some reason.

2.2.1 - 2020-07-09

• Added: Gmail mailer now supports aliases.
• Added: Support both old PHPMailer v5 (WordPress <=5.4) and PHPMailer v6 (WordPress >=5.5).
• Changed: Pepipost mailer is now using the native API v5 instead of the SendGrid migration API.
• Fixed: Incorrect Mailgun Domain Name option was not showing an email delivery error.
• Fixed: Empty debug errors for the Sendinblue mailer are no more.
• Fixed: Properly compare From Email option value with a correct default email address from WP core.

2.1.1 - 2020-06-08

• Changed: Remove current automatic default reply-to address and add WP filter wp_mail_smtp_processor_set_default_reply_to for setting default reply-to addresses.
• Changed: Improve description for several options with links to an article about how to properly use constants.
• Fixed: PHP parse error connected to Monolog library on PHP versions < 7.x.

2.1.0 - 2020-06-04

• Added: Async/scheduled tasks management support.
• Added: New warning notification for selecting the "Default (none)" mailer and saving the plugin settings.
• Changed: Set the original From Email as Reply-To address if it was overwritten by the Force From Email option.
• Changed: The Force From Email option is now enabled by default, for new plugin installs.
• Changed: Reply-To header is now set when not provided, equals to From Name/Email.
• Fixed: Display a non-empty PHPMailer error when some non-SMTP mailers generate errors.
• Fixed: Display a more accurate message, when the "channel - not found" error is triggered by SMTP.com API.
• Fixed: Save and display debug errors for the "Other SMTP" mailer.
• Fixed: Improve the debug details for the "Invalid address (setFrom)" error in the Email Test tab.
• Fixed: Improve the debug details for SMTP CA verification fail, Gmail Guzzle requirements, and Gmail invalid grant errors.
• Fixed: Improve the uninstall cleanup procedure.

2.0.1 - 2020-05-07

• Changed: Improved description of the "Do Not Send" plugin option.
• Fixed: Due to Pepipost API changes we now convert new lines so they are preserved in plain text emails.
• Fixed: Downgrade internal Guzzle dependency to 6.4 to temporarily fix compatibility issues with WordPress and Guzzle 6.5. Affects Gmail mailer.

2.0.0 - 2020-04-27

• IMPORTANT: Support for PHP 5.2-5.4 has been discontinued. If you are running one of those versions, you MUST upgrade PHP before installing or upgrading to WP Mail SMTP v2.0. Failure to do that will disable WP Mail SMTP functionality.
• Added: new mailer - SMTP.com integration.
• Changed: Plugin filters that change the FROM Name/Email in emails are now always running last.
• Fixed: false value of the WPMS_SMTP_AUTH/WPMS_SMTP_AUTOTLS constants was not properly handled in UI.
• Fixed: various minor code and internal links improvements.

1.9.0 - 2020-03-23

• Added: Add various Status tests and Info section on Tools > Site Health page.
• Added: Notify admin if there are unsaved changes in plugin admin area options.
• Fixed: Test email now has a proper bottom margin for better look.
• Changed: Update "About us" plugin page with relevant information.
• Changed: Save default WordPress FROM Email address when incorrect FROM Email address is saved by a user.

1.8.1 - 2019-12-13

• Fixed: Revert Guzzle version to 6.4.1 because Sendinblue and Gmail mailers may experience issues under certain circumstances while sending emails (not all sites are affected).
• Fixed: Make compatible the WordPress PhpMailer class inline attachments management with the Sendgrid API.

1.8.0 - 2019-12-12

• Added: New recommended mailer: Pepipost.
• Added: "Suggest a Mailer" link in a list of mailers to send us your ideas about new ones.
• Fixed: Sendgrid: Content ID for attachments missing.
• Changed: Timeout to HTTP requests (pepipost, sendgrid, mailgun), same as max_execution_time, to prevent fails when sending emails with big attachments.

1.7.1 - 2019-11-11

• Fixed: Compatibility with WordPress 5.3.
• Fixed: Processor::get_default_email() always returns empty value when server incorrectly configured.

1.7.0 - 2019-10-24

• Added: Add a new constant WPMS_DO_NOT_SEND to block email sending.
• Fixed: Default email (wordpress@example.com) rewriting in CLI mode.
• Fixed: Incorrect conflicts detection with certain plugins.
• Fixed: various typos in plugin settings.

1.6.2 - 2019-09-02

• Fixed: Race condition when loading with certain plugins, that send emails very early. Makes email delivery more reliable.

1.6.0 - 2019-08-21

• Added: New transactional mailer: Sendinblue.
• Added: Educate users to use transactional mailers for better deliverability.
• Added: New option and filter to disable admin area delivery error notices.
• Changed: Hide private API key saved in the DB for API based mailers using input[type=password].
• Changed: Update links to various docs, pointing now to https://wpmailsmtp.com.

1.5.2 - 2019-07-18

• Fixed: "Redirect URI mismatch" error for "Gmail" mailer when trying to re-authorize an account that was initially created with version < v1.5.0.
• Changed: Make "Authentication" setting in "Other SMTP" mailer ON by default for new users.
• Changed: Mailers docs links now point to wpmailsmtp.com own site.

1.5.1 - 2019-07-12

• Fixed: Duplicated emails sent to the first recipient in a loop (and others not receiving their emails).

1.5.0 - 2019-07-09

• Added: Loсo plugin support.
• Added: "About us" admin area page.
• Added: Display in debug output a possible conflicting plugin existence.
• Added: Lots of actions and filters to improve flexibility of the plugin.
• Changed: Plugin menu is now top level.
• Changed: Hide secrets/API keys in page DOM in plugin admin area.
• Changed: Do not save constant values into the database when plugin settings are saved.
• Changed: Lots of i18n improvements to support translation for both free and paid version of the plugin.
• Changed: Gmail mailer - allow to change From Name email header.
• Changed: Gmail mailer - display email used to create a connection.
• Changed: WordPress 4.9 is the minimum WordPress version we support.
• Fixed: X-Mailer header should be present in all emails.
• Fixed: PHP notices when migrating under certain circumstances from 0.x version of the plugin.
• Fixed: Options::get_group() now supports values set via constants.

1.4.2 - 2019-03-23

• 变化：已测试到 WordPress 5.1.x.
• 变化：删除了 TGMPA 库。

1.4.1 - 2018-12-03

• 修复：正确处理通过常量定义的 SMTP 密码中的反斜杠。
• 变化：允许在插件设置中选择默认（无）邮件程序时发送测试电子邮件。

1.4.0 - 2018-11-29

• Added: New option: Do Not Send - block emails from being sent.
• Added: New option: Send HTML or plain text emails when doing an Email Test.
• Added: New option: Mailgun region selection - US and EU (US is default to preserve compatibility).
• 修复：兼容 WordPress 3.6+。
• 修复：兼容 WordPress 5.0。
• 修复。 常量现可在多站点网络中使用。 设置后,常量会在整个网络的站点中全局保持生效。
• Fixed: Preserve multipart emails when using Sendgrid/Mailgun mailers (were converted to HTML-only).
• Fixed: Security hardening.
• Changed: Prefill Email Test page From field with currently logged in user email.
• Changed: Update libraries: google/apiclient-services, google/auth, phpseclib/phpseclib and their dependecies.
• Changed: Display in debug output cURL version if Gmail mailing failed.
• Changed: Display in debug output OpenSSL version if it exists if Gmail/SMTP mailing failed.
• Changed: Display plugin version in dashboard error notice when emailing failed.
• Changed: Do not allow to send Test Email if mailer not configured properly.
• Changed: Notify in plugin admin area that Gmail doesn't allow to redefine From Name/Email etc.
• Changed: List all constants with descriptions in plugin main file: wp_mail_smtp.php.
• Changed: TGMPA: change descriptions from "Required" to "Recommended" (labels were incorrect).

1.3.3 - 2018-07-05

• Fixed: Compatibility with other plugins, that are using Google Service or Google Client classes.
• Changed: Optimize code loading.

1.3.2 - 2018-06-29

• 确保其他插件/主题与我们的 TGMPA 库不冲突。

1.3.1 - 2018-06-29

• Fixed: Other SMTP: Clear new Debug messages about failed email delivery on next successful email sending.
• Fixed: Introduce conditional autoloader to workaround Gmail PHP 5.5 requirement and its library compatibility issues vs PHP 5.3+ minimum viable plugin version.

1.3.0 - 2018-06-28

• Added: New option: force From Email rewrite regardless of the current value.
• Added: New option: force From Name rewrite regardless of the current value.
• Added: New option: remove all plugin data on plugin uninstall (when user deletes it).
• Added: Notify site admins in wp-admin area with a notice about last failed email delivery. Cleans up on successful delivery.
• Added: Notify site admins in wp-admin area with a notice about possible compatibility issues with other SMTP and email delivery plugins.
• Added: Improve User Debug Experience when doing Email Test - display helpful description and steps to fix the issue.
• Added: New users: provide default SMTP Port value for new users based on Encryption selection.
• Added: New users: notify about not configured plugin settings.
• Added: New users: Recommend free WPForms Lite plugin for those who don't have it.
• Added: SendGrid/Mailgun: provide support for multipart/alternative types of emails.
• Added: Gmail: new button to remove connection and to connect a new Google account.
• Fixed: Support plugin installation into /mu-plugins/ directory.
• Fixed: SendGrid: required text/plain part of email being the first one - fixes plain text emails not having links.
• Fixed: SendGrid and Mailgun: improperly sending plain text emails in html format.
• Fixed: SMTP Debug output was empty in some cases.
• Fixed: Compatibility with lots of other plugins that use Google Analytics library of different versions.
• Fixed: "client_id is empty" is no more a problem, should be fixed.
• Changed: For SendGrid and Mailgun allow using custom defined attachments names if present. Fallback to file name.
• Changed: Gmail: switch to a wider scope to prevent possible issues in certain circumstances.
• Changed: Remove whitespaces start/end of keys, secrets etc.
• Changed: Improved helpful description tests of various options.
• Changed: Improved plugin autoloading functionality.

1.2.5 - 2017-02-05

• Fixed: Return path can't be turned off.
• Fixed: Authentication sometimes can't be turned off.
• Fixed: Auto TLS sometimes can't be turned off.
• Fixed: BCC support for Gmail was broken.
• Fixed: Debug output improved to handle SELinux and grsecurity.
• Fixed: Strip slashes from plugin settings (useful for From Name option).
• Fixed: Change the way sanitization is done to prevent accidental removal of useful data.
• Fixed: Plugin activation will not overwrite settings back to defaults.
• Fixed: Properly set Auto TLS option on plugin activation.
• Fixed: Providers autoloading improved for certain Windows-based installs.
• Fixed: Use the proper path to load translations from plugin's /languages directory.
• Changed: Do not autoload on each page request plugin settings from WordPress options table.
• Changed: Do not autoload Pepipost classes unless it's saved as active mailer in settings.

1.2.4 - 2017-01-28

• Fixed: Improved escaping in debug reporting.

1.2.3 - 2017-01-22

• Fixed: Gmail tokens were reset after clicking Save Settings.
• Fixed: Slight typo in Gmail success message.

1.2.2 - 2017-12-27

• Fixed: Correctly handle Mailgun debug message for an incorrect api key.
• Fixed: Fatal error for Gmail and SMTP mailers with Nginx web-server (without Apache at all).
• Changed: Update X-Mailer emails header to show the real sender with a mailer and plugin version.

1.2.1 - 2017-12-21

• Fixed: Failed SMTP connections generate fatal errors.

1.2.0 - 2017-12-21

• Fixed: Decrease the factual minimum WordPress version from 3.9 to 3.6.
• Changed: Improve debug output for all mail providers.

1.1.0 - 2017-12-18

• Added: New option "Auto TLS" for SMTP mailer. Default is enabled. Migration routine for all sites.
• Changed: Improve debug output - clear styles and context-aware content.
• Changed: Better exceptions handling for Google authentication process.
• Changed: Do not sanitize passwords, api keys etc - as they may contain special characters in certain order and sanitization will break those values.
• Changed: Improve wording of some helpful texts inside plugin admin area.
• Fixed: Do not include certain files in dependency libraries that are not used by Google mailer. This should stop flagging plugin by Wordfence and VaultPress.
• Fixed: Constants usage is working now, to define the SMTP password, for example.
• Fixed: Notice for default mailer.

1.0.2 - 2017-12-12

• Fixed: PHPMailer using incorrect SMTPSecure value.

1.0.1 - 2017-12-12

• Fixed: Global POST processing conflict.

1.0.0 - 2017-12-12

• Added: Automatic migration tool to move options from older storage format to a new one.
• Added: Added Gmail & G Suite email provider integration - without your email and password.
• Added: Added SendGrid email provider integration - using the API key only.
• Added: Added Mailgun email provider integration - using the API key and configured domain only.
• Added: New compatibility mode - for PHP 5.2 old plugin will be loaded, for PHP 5.3 and higher - new version of admin area and new functionality.
• 变化：管理区域的新外观。
• 变化：SMTP 密码字段现在具有“密码”类型。
• Changed: SMTP password field does not display real password at all when using constants in wp-config.php to define it.
• 并未翻译！Changed: Escape properly all translations.
• 变化：更有用的测试电子邮件内容（使用邮件程序名称）。