Check the SMTP Connection Without Sending
Adds Tools > SMTP Check, which connects and logs in to your configured SMTP server and reports success or the exact error, without sending an email to anyone.
Snippet Library
Email snippets for WordPress
Snippets for the emails WordPress sends: change the sender name and address, add a Reply-To header, send HTML email and turn off notifications you do not need. For site owners who want their messages to arrive and look right.
Log Failed Emails
Writes a line to the PHP error log whenever wp_mail() fails, with the subject, recipients and error message, to help debug delivery problems.
Send WordPress Email Through the Mailgun API
Delivers all WordPress emails through Mailgun's HTTP API, which avoids blocked SMTP ports and gives you Mailgun's delivery logs and tracking.