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.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.
Sendmail - Sendmail is a general purpose internetwork email routing facility that supports many kinds of...
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.