A PHP script to send email from any Email ID without permission.
A fast, simple yet very efficient email queuing system for PHP/MySQL
Manage mailboxes, filter/get/delete emails in PHP (supports IMAP/POP3/NNTP)
Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.
The Official Twilio SendGrid Led, Community Driven PHP API Library
Grav Email Plugin
send verification emails when users sign up to keep it
The classic email sending library for PHP