
Postfix
Exim
Sendmail
Mail-in-a-box
Courier-MTA
sSMTP
Haraka
OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...

Code Effects is the fastest and most intuitive .NET business rules engine trusted by government entities and Fortune 500 corporations all over the world

Which is more popular?
Based on our record, OpenSMTPD seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | opensmtpd.org | codeeffects.com |
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| Company | — | 2009 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of OpenSMTPD yet.
Code Effects Software is the developer of state-of-the-art business rules engine that combines an incredible performance of rule evaluation with revolutionary web interface, allowing the end-users to author and manage their corporate business rules with no knowledge of programming languages or IT...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of OpenSMTPD yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
DAY[0] Episode #31 - kr00k, GhostCat, and more issues from NordVPN, Samsung, OpenSMTPd
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using OpenSMTPD and Code Effects. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


OpenSMTPD is an implementation of the server-side SMTP protocol, with some additional standard extensions. Its design goals include security, reliability, ease of configuration, and support for common use cases.
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Recommendations tracked on public social media and blogs since March 2021.


I've had something of the same experience with Postfix, u/0x29aNull. Check out OpenSMTPD. It is lightweight and standards compliant. I know that there are packages for Debian and Alpine Linux. There may also be ones for Fedora/RHEL... Source: over 3 years ago
When I installed Rspamd with on OpenBSD / OpenSMTPD the other day, DKIMProxy out (dkimproxy_out daemon), which had been got via OpenBSD Ports package system, was used to add DKIM signatures to mails in order to improve security on emails. - Source: dev.to / over 5 years ago
Tracking Code Effects since Jan 2023.
When comparing OpenSMTPD and Code Effects, you can also consider the following products.

Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.
Compare Postfix to OpenSMTPD or Code Effects:

Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.
Compare Exim to OpenSMTPD or Code Effects:

Sendmail is a general purpose internetwork email routing facility that supports many kinds of...
Compare Sendmail to OpenSMTPD or Code Effects:

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.
Compare Mail-in-a-box to OpenSMTPD or Code Effects:

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open...
Compare Courier-MTA to OpenSMTPD or Code Effects:

sSMTP is a simple MTA to deliver mail from a computer to a mail server.
Compare sSMTP to OpenSMTPD or Code Effects: