Lettre
Lettre provides the following features: Multiple transport methods Unicode support (for email content and addresses) Secure delivery with SMTP using encryption and authentication Easy email builders
Inbucket
Need to test your webapps outbound emails with Mailinator but stuck behind a firewall? Want to keep the new application you ar ...
MailHog
MailHog - Web and API based SMTP testing
Go-Guerrilla
It's an SMTP server written in Go, for the purpose of receiving large volumes of email. It started as a project for GuerrillaM ...
Postfix
Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to administer, a ...
OpenSMTPD
OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with some additional standard exte ...