Top 12 Open-Source Alternatives to Squirrelmail

Squirrelmail

SquirrelMail is a standards-based webmail package written in PHP.

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Pricing:

Open Source

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Product categories

Calendar Email Email Clients Email Management Email Service Provider Email Testing Enterprise Communication Hosted Email Office Suites Open Source SMTP Server Self-hosted Email

Summary

The top open-source alternatives to Squirrelmail are Roundcube, Rainloop, and Mailpile. 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.

Roundcube Landing Page
1

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #Email Clients #SMTP Server 16 social mentions
Rainloop Landing Page
2

Rainloop

RainLoop is a web based email client.
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 1 social mentions
Mailpile Landing Page
3

Mailpile

Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features.
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients
SOGo Landing Page
4

SOGo

SOGo is groupware server with a focus on scalability and open standards.
Pricing:
- Open Source
#Email #Email Clients #SMTP Server 1 social mentions
Cypht Landing Page
5

Cypht

All your E-mail, from all your accounts, in one place. Cypht is like a news reader, but for E-mail.
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 4 social mentions
iRedMail Landing Page
6

iRedMail

A fully fledged, free email server solution, an open source project (GPL v2).
Pricing:
- Open Source
#Email #Email Clients #SMTP Server 3 social mentions
mailcow Landing Page
7

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Open Source #Email Service Provider 87 social mentions
Mail-in-a-box Landing Page
8

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 #Email Service Provider #Email Clients 122 social mentions
Mailspring Landing Page
9

Mailspring

Mailspring is a mail client for Mac, Windows and Linux.
Pricing:
- Open Source
#Email #Calendar #Enterprise Communication 25 social mentions
Nextcloud Mail Landing Page
10

Nextcloud Mail

💌 Mail app for Nextcloud
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 5 social mentions
Tutanota Landing Page
11

Tutanota

Get your encrypted mailbox for free.
Pricing:
- Open Source
#Email #Enterprise Communication #Email Clients 181 social mentions
Mailtrap Landing Page
12

Mailtrap

Email Delivery Platform that delivers just in time.  Great for businesses and individuals.
Pricing:
- Open Source
- Freemium
#Email #Email Testing #Transactional Email 57 social mentions