Top 5 Open-Source Alternatives to esmtp

Product categories

Email Email Clients Email Delivery Email Marketing Email Marketing Platforms MTA SMTP Server

Summary

The top open-source alternatives to esmtp are sendEmail, Mailer, and OpenSMTPD. 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.

sendEmail Landing Page
1

sendEmail

sendEmail is a lightweight, command line SMTP email client.
Pricing:
- Open Source
#SMTP Server #Email #MTA
Mailer Landing Page
2

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
OpenSMTPD Landing Page
3

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
Exim Landing Page
4

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
Hectane Landing Page
5

Hectane

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