Mailu is a simple yet full-featured mail server as a set of Docker images. It is free software (both as in free beer and as in free speech), open to suggestions and external contributions.
Poste.io Alternatives
Poste.io is described as 'Full featured solution for your Email server. Native implementation of last anti-SPAM metods, webmail and easy administration included' and is a Mail Server in the online services category. There are more than 10 alternatives to Poste.io for a variety of platforms, including Self-Hosted, Windows, Linux, Web-based and Mac apps. The best Poste.io alternative is mailcow: dockerized, which is both free and Open Source. Other great apps like Poste.io are Mail-in-a-box, Zimbra Collaboration Suite, Foxmail and Mail Server Builder.
Alternatives list
- 10 Mailu alternatives
Fast, safe, heavy mail solution. Web-client access, LAN or WAN self-hosted server, maintenance-free design. No Windows server and database server required, unlimited mail accounts, storage, attachment size, custom logo. Free for commercial use.
Cost / License
- Pay once
- Proprietary
Application types
Platforms
- Windows
- Self-Hosted


Turnkey Solutions for the Enterprise Cloud
Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.

Sanwhole Exchange is a server running iMail, iPress and iStore services. iMail is an enterprise-class email server does Microsoft Exchange and Gmail work. iPress sets blog, forums and tickets in one. iStore is an online store.



Xeams is a secure and powerful mail server for that includes a powerful spam filtering engine that eliminates up to 99% of junk email right out of the box. The software offers a flexible approach to email, making it a very user friendly server.
Cost / License
- Freemium (Subscription)
- Proprietary
Application type
Platforms
- Mac
- Windows
- Linux
- BSD
WildDuck is a scalable no-SPOF IMAP/POP3 mail server. WildDuck uses a distributed database (sharded + replicated MongoDB) as a backend for storing all data, including emails.

Simple, easy and secure mail server with a convenient and simple interface. Automatic certificate renewal through Let’s encrypt. Redirect, local storage. IMAP and SMTP.


+9
Mox is a modern full-featured open source secure mail server for low-maintenance self-hosted email.


+7
















