Volanea Email Deliveryv1.0.0
Send WordPress email through the Volanea API instead of PHP mail(), with an automatic fallback so no message is ever lost.
Alternatives to Lettr – Email API
Plugins below are selected for functional relevance and current directory signals. Active-install counts do not affect this ranking.
Relevant replacements
WordPress plugins with similar use cases
Compatibility and update metadata provide context, not a quality guarantee. Review each plugin’s details for your site.
Reliable WordPress email delivery with multiple providers, two connections, Return Path, Reply-To and visual AND/OR routing.
SwiftTrap for Mailtrapv3.0.3
Send WordPress emails through the Mailtrap Email API (not SMTP). Bulk and transactional streams, categories, suppression list, email log.
Send every WordPress email through SendFleet. One API key, no SMTP settings. Your own Amazon SES free for 3,000 emails a month, or ours from $5.
Resendv1.0.0
Send WordPress emails through the Resend API. Build, test, and deliver transactional emails at scale.
PureHost Send-Mailsv1.0.7
Sends all WordPress emails via send-mails.de and feeds bounces and complaints back into your newsletter plugin.
SendSend Mailerv1.0.0
Send all WordPress email (password resets, order receipts, form notifications) through the SendSend email API instead of your web server.
SendPaw Mailv1.4.0
Reliable transactional email for WordPress through SendPaw. Send your WordPress mail over the HTTP API or SMTP, with automatic fallback.
Send emails from WordPress through SendGrid using SMTP by YayCommerce
Send WordPress email and newsletters through your own Gmail, Microsoft 365, SES or SMTP with a free Emerge account: 300 emails/day, bounces handled.