Clean Email - Clean Email is an online service that empowers you to take control of your mailbox.
Postfix - Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.
MailClark - The Slack bot for external communications
sSMTP - sSMTP is a simple MTA to deliver mail from a computer to a mail server.
Hiver - Manage Customer Support, Sales and Projects right from your Gmail inbox. Collaborate with Shared Labels, Shared Contacts, email notes, email reminders and email templates
Sendmail - Sendmail is a general purpose internetwork email routing facility that supports many kinds of...