Top 12 Open-Source Alternatives to sSMTP

Product categories

Email Email Clients Email Delivery Email Marketing Email Marketing Platforms Email Service Provider Email Testing MTA Newsletter Marketing Office Suites SMTP Server Self-hosted Email

Summary

The top open-source alternatives to sSMTP are Exim, OpenSMTPD, and sendEmail. 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.

Exim Landing Page
1

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
OpenSMTPD Landing Page
2

OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...
Pricing:
- Open Source
#SMTP Server #Email #MTA 2 social mentions
sendEmail Landing Page
3

sendEmail

sendEmail is a lightweight, command line SMTP email client.
Pricing:
- Open Source
#SMTP Server #Email #MTA
iRedMail Landing Page
4

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
Mail-in-a-box Landing Page
5

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
Mailer Landing Page
6

Mailer

Free utility to send emails from the command line. No Installation. All contained in one file.
Pricing:
- Open Source
#Email Marketing #Email Marketing Platforms #Email
Courier-MTA Landing Page
7

Courier-MTA

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open...
Pricing:
- Open Source
#SMTP Server #MTA #Email
Inbucket Landing Page
8

Inbucket

Inbucket is an email testing application; it will accept messages for any email address and make...
Pricing:
- Open Source
#SMTP Server #Email #MTA 3 social mentions
MailHog Landing Page
9

MailHog

MailHog is an email testing tool inspired by MailCatcher, but easier to install.
Pricing:
- Open Source
#Email #Office Suites #Email Testing
mailcow Landing Page
10

mailcow

An open source mailserver suite.
Pricing:
- Open Source
#Email #Self-hosted Email #Email Service Provider 82 social mentions
Mailgun Landing Page
11

Mailgun

A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.
Pricing:
- Open Source
#Email Delivery #Transactional Email #Email Marketing 11 social mentions
Hectane Landing Page
12

Hectane

Lightweight, cross-platform SMTP client
Pricing:
- Open Source
#SMTP Server #Email #MTA