Saral SMTP
| 开发者 | saraltechies |
|---|---|
| 更新时间 | 2026年10月21日 22:47 |
| PHP版本: | 7.4 及以上 |
| WordPress版本: | 7.1 |
| 版权: | GPLv2 or later |
| 版权网址: | 版权信息 |
详情介绍:
mail(), which has no authentication, so a lot of it goes to spam or is never delivered. Saral SMTP sends every wp_mail() email through a proper email service instead, using the service's own API where it has one. Plugins and themes that send email need no changes.
Most SMTP plugins stop there: one service for every email, and a generic "check your SPF and DKIM" warning. Saral SMTP is built for sites where email matters enough to get those two things right.
Route by sender
A shop's order emails, a contact form's messages and WordPress's password resets have different needs. Saral SMTP knows which plugin, theme or WordPress feature sent each email, so you can send each sender's emails through its own connection: WooCommerce orders through Amazon SES, contact form messages through your Google Workspace mailbox, everything else through Brevo. The fallback connection still covers all of them, and the email log shows why each email went through the connection it did.
A deliverability check that knows your email service
Since 2024 Gmail, Yahoo and Microsoft reject or junk email from domains without SPF, DKIM and DMARC, and every email service needs different records. Choose a connection and Saral SMTP checks the records that service needs: the SPF include it requires (merged into your existing SPF record, ready to copy), the DKIM selectors it signs with, MailChannels' Domain Lockdown, and DMARC. For Amazon SES it asks SES for your domain's three DKIM keys and tells you exactly which CNAME records are missing. "Other SMTP" connections are recognized by their server, so smtp.office365.com is checked as Microsoft 365.
Supported email services
- Any SMTP server, with quick-setup presets for Gmail / Google Workspace, Microsoft 365, Outlook.com, Zoho Mail (all regions, personal and business), Yahoo, iCloud, AOL, GMX, IONOS, Namecheap Private Email, GoDaddy, Hostinger, Fastmail, Yandex and the SMTP relays of Amazon SES, Brevo, SendGrid, Mailgun, Mailjet, Postmark, Mailtrap, SMTP2GO, MailerSend, SendPulse and Resend
- Gmail / Google Workspace (Gmail API with OAuth, no app password needed)
- Microsoft 365 / Outlook (Microsoft Graph with OAuth, works where Microsoft has switched off SMTP basic auth)
- Zoho Mail (Zoho Mail API with OAuth, all Zoho data centres, works where SMTP ports are blocked)
- Amazon SES (API v2)
- SendGrid (global and EU)
- Mailgun (US and EU)
- Brevo (formerly Sendinblue)
- Postmark (with message streams)
- Resend
- MailerSend
- Mailjet
- SparkPost (US and EU)
- ZeptoMail by Zoho (all regions)
- Mandrill (Mailchimp Transactional)
- Mailtrap (transactional and bulk streams)
- SMTP2GO
- Elastic Email
- SendLayer
- Cloudflare Email Service
- MailChannels
- SendPulse
- SMTP.com
- SocketLabs
- Netcore Email (formerly Pepipost)
- toSend
- Postal (self-hosted)
- PHP mail()
- Route by sender: send each plugin's, theme's or WordPress's own emails through the connection you choose (see above).
- Route by From address: emails are also sent through the connection whose From address matches, and you can add extra addresses or whole @domains to a connection.
- Automatic fallback: if the main connection fails, the email is sent through a backup connection straight away.
- Automatic retries: failed emails from the last 24 hours are retried automatically, waiting longer after each attempt (15, 30, 60 minutes…) so a service that is down is not overloaded. Test emails, Saral SMTP's own alerts and emails whose attachments are gone are never retried.
- Sending limits: set an hourly or daily limit per connection (for example your free plan's quota). Once it is reached, emails go through the fallback connection instead of being rejected.
- Email log: every email with its status, connection, response time, the provider's response and the plugin or theme that sent it. Filter by status, connection, date or text, preview HTML emails safely (remote images are blocked until you choose to load them), resend to the original or new recipients, and export to CSV. Password reset and new user emails are logged without their content, so their login links never sit in the database.
- Error tips: common errors (wrong password, blocked port, unverified sender, sandbox mode…) come with a plain-language explanation of what to fix.
- Failure alerts by email, Slack, Discord, Google Chat, Telegram or your own webhook, with a limit on how often they are sent.
- Service-aware deliverability check: checks the exact SPF and DKIM records your email service needs, plus DMARC and MX, and gives you the records to add (see above). Recognizes the requirements of Google, Microsoft 365, Amazon SES, SendGrid, Mailgun, Brevo, Postmark, Resend, MailerSend, Mailjet, SparkPost, Mandrill, Mailtrap, SMTP2GO, Elastic Email, MailChannels, SendPulse, SocketLabs and Zoho.
- Dashboard: sent and failed counts, success rate, a 14-day chart and the state of each connection.
- Weekly summary email (optional).
- Encrypted credentials: API keys, passwords and OAuth tokens are encrypted before they are saved to the database.
- Automatic plain-text version for HTML emails, which helps them avoid spam filters.
- Disable sending on staging sites: emails are logged but never delivered.
- Email controls: switch off individual WordPress notification emails, such as new comment, new user, password changed and automatic update emails.
- Site Health checks: Tools → Site Health warns you when no email service is connected, an account needs signing in again or emails are failing, and the Info tab includes Saral SMTP details for support.
- Import and export of settings, with or without secrets.
- Conflict detection for other SMTP plugins and replaced
wp_mail()functions. - WP-CLI:
wp saral-smtp test,connections,stats,purge-logsandretry-failed.
saralsmtp_providers: register your own provider by extendingSaralSMTP_Provider.saralsmtp_default_connection: choose a connection programmatically.saralsmtp_before_send,saralsmtp_mail_sent,saralsmtp_mail_failed: actions around every send.saralsmtp_pre_send: change an email just before it is sent, or stop it (return true or false).saralsmtp_logged: runs after an email is logged, with the log id, status and the service's message id.saralsmtp_stored_settings,saralsmtp_stored_connections: supply settings and connections, e.g. one setup for a multisite network.saralsmtp_nav_pages,saralsmtp_log_row_status,saralsmtp_log_view: add pages to the Saral SMTP menu and details to the email log.saralsmtp_http_timeout,saralsmtp_smtp_timeout,saralsmtp_dkim_selectors.- Define
SARALSMTP_ENCRYPTION_KEYinwp-config.phpto use your own encryption key instead of the site's salts.
安装:
- Upload the
saral-smtpfolder to/wp-content/plugins/, or install it from Plugins → Add New. - Activate the plugin. You are taken to the Saral SMTP dashboard.
- Click Add your first connection, choose your email service and enter its details.
- Send a test email from the dashboard or the Connections page.
屏幕截图:
常见问题:
How does routing by sender work?
Saral SMTP records which plugin, theme or WordPress feature called wp_mail() for every email (you can see it in the email log). Under Settings → Route by sender, choose a connection for any of them. An email follows the first rule that matches: a connection chosen for a test or resend, then the rule for its sender, then a connection whose From address matches, then the default connection. If that connection fails, the fallback connection takes over. Retries and resends follow the same rules as the original email.
Why does the deliverability check need my connection?
Each email service authorizes your domain differently. Brevo needs include:spf.brevo.com in SPF and DKIM keys at brevo1 and brevo2; Amazon SES needs three DKIM keys that are unique to your domain and no SPF change; Resend needs SPF on a send. subdomain. Knowing the service lets Saral SMTP check the right records and give you the exact ones to add, instead of a generic warning. Without a connection, it runs a general check.
Which email service should I choose?
For a business domain, an API service such as Amazon SES, Brevo, Postmark, Resend or SendGrid is usually the most reliable. If you already use Google Workspace or Microsoft 365, the Gmail or Microsoft 365 connection is the easiest. If your host blocks outgoing SMTP ports, choose any API-based service.
Do I need to change my contact form or WooCommerce settings?
No. Saral SMTP handles every email sent with wp_mail(), which is what almost all plugins and themes use.
How does the fallback connection work?
If the connection chosen for an email fails, Saral SMTP sends the same email through the fallback connection straight away. The log shows that the fallback was used and why the first connection failed.
My emails still go to spam.
Run Tools → Domain deliverability check. Your domain needs an SPF record that includes your email service, the DKIM records your service gives you, and a DMARC record. Use a From address on that domain.
Are my API keys safe?
They are encrypted with AES-256 before they are stored, using a key derived from your site's salts (or SARALSMTP_ENCRYPTION_KEY if you define it). Saved secrets are never sent back to the browser. If you change your salts, enter the keys again.
Can I stop emails from being sent on my staging site?
Yes. Turn on Settings → Disable all email sending. Emails are still logged, so you can check them.
What happens to my data when I delete the plugin?
Connections, settings and logs are kept unless you turn on Settings → Delete all Saral SMTP data when the plugin is deleted.
Does it work with multisite?
Each site in a network has its own connections and log.
更新日志:
- A card on the Saral SMTP dashboard and a line on the Email Logs page describe what Saral SMTP Pro adds (delivery and bounce status, a suppression list, open and click tracking, background sending), with a "Pro features" link in the plugins list.
- Sites that sent at least 300 emails in 30 days, after 2 weeks of use, see one notice about Pro on the Dashboard and Plugins screens. "Remind me in 3 months" and "Don't show this again" put it off or turn it off for good. All of this is hidden once Pro is installed, and nothing is sent anywhere.
- New: Route by sender. Send each plugin's, theme's or WordPress's own emails through the connection you choose; the email log shows why each email used its connection.
- New: the deliverability check knows each email service's SPF include and DKIM selectors, gives you the exact records to add (including your SPF record with the include merged in), checks Amazon SES DKIM keys through the SES API, and recognizes "Other SMTP" servers.
- Fix: retries and resends keep the original email's sender, so they are routed and labelled like the original.
- Fix: emails from code outside plugins and themes are no longer labelled as sent by WordPress.
- Fix: the DKIM check no longer counts revoked keys (an empty "p=").
- Developer hooks for add-ons:
saralsmtp_pre_send,saralsmtp_logged,saralsmtp_stored_settings,saralsmtp_stored_connections,saralsmtp_nav_pages,saralsmtp_log_row_statusandsaralsmtp_log_view.
- Initial release.