Clean Up Email Recipient Lists Before Sending
Removes duplicate, malformed and placeholder addresses (such as example.com or .test domains) from email recipient lists, so one bad address does not make the whole email fail.
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.
Never Email Certain Addresses or Domains
Removes addresses and whole domains on your suppression list from every outgoing email, such as bouncing inboxes or people who asked not to be contacted, and skips emails left with no recipient.