Top 12 Open-Source Alternatives to eM Client

eM Client

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.

Product categories

Calendar Design Tools Developer Tools Email Email Clients Email Service Provider Enterprise Communication Hosted Email Kanban Network & Admin SMTP Server Self-hosted Email

Summary

The top open-source alternatives to eM Client are Mailspring, Spark Mail, and Roundcube. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Mailspring Landing Page
1

Mailspring

Mailspring is a mail client for Mac, Windows and Linux.
Pricing:
- Open Source
#Email #Email Clients #Calendar 25 social mentions
Spark Mail Landing Page
2

Spark Mail

Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Pricing:
- Open Source
#Email #Email Clients #Calendar 30 social mentions
Roundcube Landing Page
3

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #SMTP Server #Email Clients 16 social mentions
Tutanota Landing Page
4

Tutanota

Get your encrypted mailbox for free.
Pricing:
- Open Source
#Email #Email Clients #Enterprise Communication 177 social mentions
FairEmail Landing Page
5

FairEmail

Open source, privacy friendly email app
Pricing:
- Open Source
#Email #Email Clients #Calendar 52 social mentions
iRedMail Landing Page
6

iRedMail

A fully fledged, free email server solution, an open source project (GPL v2).
Pricing:
- Open Source
#Email #SMTP Server #Self-hosted Email 2 social mentions
Radicale Landing Page
7

Radicale

The Radicale Project is a complete CalDAV (calendar) and CardDAV (contact) server solution.
Pricing:
- Open Source
#Email #Email Clients #Network & Admin 15 social mentions
Baïkal Landing Page
8

Baïkal

Cal and CardDAV server
Pricing:
- Open Source
#Network & Admin #Email #Email Clients 22 social mentions
Rainglow Color Themes Landing Page
9

Rainglow Color Themes

320+ color themes for a variety of editors and software.
Pricing:
- Open Source
#Email #Developer Tools #Design Tools 2 social mentions
Kanmail Landing Page
10

Kanmail

An email client that works like a kanban board.
Pricing:
- Open Source
- Paid
- Free Trial
- $45.0 / One-off (Limited time v1 license)
#Email Clients #Kanban #Productivity 4 social mentions
Mail-in-a-box Landing Page
11

Mail-in-a-box

Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software and also includes contacts and calendar synchronization.
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service Provider 115 social mentions
Nextcloud Mail Landing Page
12

Nextcloud Mail

💌 Mail app for Nextcloud
Pricing:
- Open Source
#Email #Email Clients #Enterprise Communication 5 social mentions