Take back control of your email with this mail server in a box
mailcow: dockerized
Mail hosting made simple
Disposable webmail server (similar to Mailinator) with built in SMTP
Insular email distribution - mail server as Docker images
Universal server
Small Business Appliance
Zentyal is a Linux Small Business Server
A serverless email server on AWS using S3 and SES
Simple, modern & fast web-based email client
Full SMTP/Mail server Appliance in 5 minutes
Enterprise Business Operating System
an 'auto-reply' bot for your mail server
CheckeredFlag is a super simple mail server.
To synch and encrypt all sorts of data across different sources
MailSmsGateway is a simple interface between mailing and sms services.
Synology package to hibernate while running Mail Station & Server
Host a personal portfolio in Google App Engine- Python
Webkosa is the open source edition of Webcrossing.
AV/content filter for Qmail
Linux Mail Server with Calendaring and IM