Client daemon to move mail from POP and IMAP to your local computer
Catches mail and serves it through a dream
SMTP email proxy and relay server
EMDIS::ECS Perl module
PHP SDK to connect with Easy Email Verification API and validate email
Booking/reservation of meeting rooms/equipment with e-mail invitations
Gross greylisting server
The first Open-Source high-performance MTA for high-volume senders
qpsmtpd is a flexible smtpd daemon written in Perl
Python API for Sendmail Milters.
JavaScript/XML engine for Apache
one server framework
Open source DMARC implementation