WP Mail Log
Log all calls to wp_mail() to a file wp-content/plugins/wp-mail-log/wp-mail-log.txt for debugging. Delete this file afterwards.
Метка плагина: wpmail
WP Mailtrap
WP Mailtrap is a simple plugin to test emails in WordPress with the Mailtrap API.
NG-Mail2Telegram
Создайте бота, который будет отправлять админам сайта уведомления в Телеграме
Super Duper SMTP
A crazy simple SMTP plugin.