External SMTP mail configuration via global variables in wp-config.php.

Freaking best newsletters, autoresponders, singup forms and reports for WordPress.

This plugin allows you to subscribe an user to your Sendy list when he registers.

Free WP Mail SMTP plugin - fix WordPress email deliverability with Gmail, Amazon SES, SendGrid, Mailgun, Cloudflare, Postmark, Brevo and any SMTP.

Fix your email delivery problems by sending your WordPress emails through Amazon SES's powerful email sending infrastructure.

Rule-based WordPress email delivery with two connections and visual AND/OR Smart Routing included in Free.