phpList - phpList is an email and newsletter marketing tool.
Postfix - Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.
Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.
sSMTP - sSMTP is a simple MTA to deliver mail from a computer to a mail server.
PilotMail - Build awesome HTML emails and test them easily on real email clients before sending with PilotMail.
Sendmail - Sendmail is a general purpose internetwork email routing facility that supports many kinds of...