Lettr – Email API

Send WordPress email through the Volanea API instead of PHP mail(), with an automatic fallback so no message is ever lost.

This plugin reconfigures the wp_mail() function to send email using API (via AvangEmail) instead of SMTP and creates a Settings page that allows you t …

Send WordPress emails through the Mailtrap Email API (not SMTP). Bulk and transactional streams, categories, suppression list, email log.

Route wp_mail through Gmail, Microsoft, SendGrid, Mailgun, SES, Brevo, or any SMTP server. OAuth or API key, with failover and bounce tracking.

Drag-and-drop email template builder for WooCommerce and Easy Digital Downloads. Design branded, responsive transactional emails without code.

Send WordPress email through SMTP with a simple 3-step setup, test email confirmation, privacy-first logs, provider presets, and safe diagnostics.