Slimta vs Exim

Our great sponsors

InfluxDB - Power Real-Time Data Analytics at Scale

WorkOS - The modern identity platform for B2B SaaS

SaaSHub - Software Alternatives and Reviews

Our great sponsors

Slimta		Exim
	Project
1	Mentions	9
170	Stars	699
-0.6%	Growth	0.9%
2.8	Activity	9.2
13 days ago	Latest Commit	17 days ago
Python	Language	C
MIT License	License	-

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

Slimta

Posts with mentions or reviews of Slimta. We have used some of these posts to build our list of alternatives and similar projects.

How to setup SMTP server using Python?
1 project | /r/hacking | 20 Jun 2021

Exim

Posts with mentions or reviews of Exim. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-08-09.

Is it right to blame Google/Yahoo for deprecating an email forwarding service?
1 project | news.ycombinator.com | 14 Jan 2024

Documentation for ARC is pretty sparse.
The instructions for setting it up in Exim (default MTA on Debian systems) can be found here: https://github.com/Exim/exim/blob/master/doc/doc-txt/experim...
(AFAICT, there is absolutely no mention of ARC in the main Exim documentation: https://exim.org/docs.html)
Exim 4.97.0 – SMTP Mail Server – Message Transfer Agent (MTA)
1 project | news.ycombinator.com | 4 Nov 2023
Exim 4.96.2 – SMTP Mail Server – Message Transfer Agent (MTA) – CVE ZDI
1 project | news.ycombinator.com | 15 Oct 2023
EXIM and ARC
1 project | /r/sysadmin | 23 Aug 2022
MS-ISAC CYBERSECURITY ADVISORY - Multiple Vulnerabilities in Exim Could Allow for Remote Code Execution - PATCH: NOW
3 projects | /r/k12cybersecurity | 9 Aug 2022

Exim:https://www.exim.org/
Best alternative to on-prem Microsoft Exchange
1 project | /r/sysadmin | 10 Jan 2022

EXIM is a popular option, though it seems to be subject to just as many vulnerabilities and exploits as exchange is.. so either way you go make sure to patch regularly
Which email services are reliable on the long term?
1 project | /r/privacy | 29 Sep 2021

Run your own. Usually with Exim or Postfix.
Looking for an email client with support for tags
1 project | /r/linuxmasterrace | 26 Sep 2021

I can either direct particular addresses to a mailbox on the VPS where they can be retrieved with POP3, or can forward them to any arbitrary address. Or anything else I can configure exim to do.
SMTP Relay/Server?
1 project | /r/selfhosted | 13 May 2021

I use Exim

What are some alternatives?

When comparing Slimta and Exim you can also consider the following projects:

Courier MTA - Courier Mail Server

OpenSMTPD - This is official OpenSMTPD Portable repository. Forks, pull requests and other contributions are welcome!

Dovecot - Dovecot mail server

Haraka - A fast, highly extensible, and event driven SMTP server

Postal - 📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

MailHog - Web and API based SMTP testing

Find-Us-On-GitLab - Lightmeter uses GitLab, not GitHub -- find repos at: https://gitlab.com/lightmeter

Mail-in-a-Box - Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.

MailCatcher - Catches mail and serves it through a dream.