Browse free open source Email Servers and projects below. Use the toggles on the left to filter open source Email Servers by OS, license, language, programming language, and project status.

  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
    Try Free
  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

    Build generative AI apps with Vertex AI. Switch between models without switching platforms.
    Start Free
  • 1
    NethServer

    NethServer

    Linux for for small offices and medium enterprises

    NethServer 7 is an operating system for Linux enthusiasts, designed for small offices and medium enterprises. Based on CentOS, the product's main feature is a modular design which makes it simple to turn the distribution into a mail server and filter, web server, groupware, firewall, web filter, IPS/IDS or VPN server. A comprehensive web-based user interface simplifies common administration tasks and enables single-click installation of several pre-configured modules. Stay tuned with NethServer 8! Follow the links on http://www.nethserver.org for more information
    Downloads: 23 This Week
    Last Update:
    See Project
  • 2
    The deepOfix Mail Server makes it possible for organisations with minimal technical expertise to have robust server infrastructure. It offers unprecented ease of use, doesn't require prior GNU/Linux experience and is backed by a full-time support team.
    Downloads: 1 This Week
    Last Update:
    See Project
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