Easiest Mail Servers to self-host

Self-hosted newsletter and mailing list manager

Replaces Mailchimp, Sendinblue

Cross-platform desktop email client

Replaces Outlook, Apple Mail

Email testing tool with a fake SMTP server

Replaces Mailtrap

Turn a fresh server into a working mail server

Replaces Google Workspace, Microsoft 365

Email and SMTP testing tool with web UI

Replaces Mailtrap, MailHog

Browser-based IMAP webmail client

Replaces Gmail, Outlook Web

Catch-all SMTP server for inspecting test email

Replaces Mailtrap

Modern, secure all-in-one mail server

Replaces Google Workspace, Microsoft 365

Simple, modern and fast web-based email client

Replaces Gmail, Outlook Web

Fake SMTP server for development email testing

Replaces Mailtrap

Open-source newsletter tool for senders

Replaces Mailchimp, Sendinblue

Lightweight, fast and modern webmail client

Replaces Gmail, Outlook Web

Swiss Army knife for SMTP testing

Replaces Mailtrap

IMAP webmail client integrated into Nextcloud

Replaces Gmail

Community-enhanced fork of the Thunderbird email client

Replaces Microsoft Outlook

Graphical editor for Sieve mail filtering scripts

Replaces Gmail filters

Self-hosted transactional email relay with API

Replaces SendGrid, Postmark

Free webmail front-end for IMAP and SMTP servers

Replaces Gmail, Outlook Web

Lightweight SMTP client for sending mail

Replaces Sendmail

Tiny mail transfer agent for outbound delivery

Replaces Sendmail, Postfix

Lightweight and fast GTK email client

Replaces Microsoft Outlook

Simple relay-only mail transfer agent

Replaces Sendmail

Flexible mail retrieval tool for POP3 and IMAP

Replaces fetchmail

Small POP3 client for retrieving mail

Replaces fetchmail