Top 12 Open-Source Alternatives to SpamAssassin

Product categories

Anti-Spam Calendar Cyber Security Disposable Email Email Email Clients Email Service Provider Enterprise Communication Network Security Perimeter Security And Firewalls SMTP Server Self-hosted Email

Summary

The top open-source alternatives to SpamAssassin are SpamTitan, mailcow, and iRedMail. 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.

SpamTitan Landing Page
1

SpamTitan

Comprehensive Email Protection. 99.99% Spam Detection. Blocks phishing, viruses, malware and other email threats.
Pricing:
- Open Source
- Free Trial
- $0.81 / Monthly (Per User)
#Anti-Spam #Email Security #Email Management
mailcow Landing Page
2

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service Provider 82 social mentions
iRedMail Landing Page
3

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
pfSense Landing Page
4

pfSense

pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Pricing:
- Open Source
#Perimeter Security And Firewalls #Cyber Security #Network Security 10 social mentions
Spark Mail Landing Page
5

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
6

Roundcube

Web-based IMAP email client
Pricing:
- Open Source
#Email #SMTP Server #Email Clients 16 social mentions
Wazuh Landing Page
7

Wazuh

Open Source Host and Endpoint Security
Pricing:
- Open Source
#Security & Privacy #Security Information And Event Management (SIEM) #Cyber Security 49 social mentions
Tutanota Landing Page
8

Tutanota

Get your encrypted mailbox for free.
Pricing:
- Open Source
#Email #Email Clients #Enterprise Communication 177 social mentions
OPNsense Landing Page
9

OPNsense

OPNsense® you next open source firewall. Free Download. High-end Security Made Easy™. Offers Intrusion Prevention, Captive Portal, Traffic Shaping and more.
Pricing:
- Open Source
#Operating Systems #Linux #Perimeter Security And Firewalls 94 social mentions
Mail-in-a-box Landing Page
10

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
Exim Landing Page
11

Exim

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Pricing:
- Open Source
#SMTP Server #Email #MTA
Guerrilla Mail Landing Page
12

Guerrilla Mail

Guerrilla Mail is a web-based app that provides a disposable and anonymous email address. Users of the service are not required to set up an account in order to send or receive emails.
Pricing:
- Open Source
#Disposable Email #Fake Email #Email Productivity 5 social mentions