Software Alternatives & Reviews

MailCatcher VS OpenSMTPD

Compare MailCatcher VS OpenSMTPD and see what are their differences

MailCatcher logo MailCatcher

MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a...

OpenSMTPD logo OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...
  • MailCatcher Landing page
    Landing page //
    2021-09-15
  • OpenSMTPD Landing page
    Landing page //
    2019-03-05

MailCatcher videos

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OpenSMTPD videos

DAY[0] Episode #31 - kr00k, GhostCat, and more issues from NordVPN, Samsung, OpenSMTPd

Category Popularity

0-100% (relative to MailCatcher and OpenSMTPD)
Email Testing
100 100%
0% 0
SMTP Server
0 0%
100% 100
Email
63 63%
37% 37
Office Suites
100 100%
0% 0

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare MailCatcher and OpenSMTPD

MailCatcher Reviews

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OpenSMTPD Reviews

Best Free and Open Source Alternatives to Microsoft Exchange Server
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.

Social recommendations and mentions

Based on our record, MailCatcher should be more popular than OpenSMTPD. It has been mentiond 12 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

MailCatcher mentions (12)

  • Trap and test AWS SES emails locally
    If you want to test SMTP mail delivery, there's MailCatcher: https://mailcatcher.me/. - Source: Hacker News / 6 months ago
  • Mailtutan is an SMTP server s written in Rust for test and development environments.
    Useful. Seems very similar to MailCatcher, but not depending on Ruby is always a plus. Source: 11 months ago
  • free-for.dev
    Mailcatcher.me — Catches mail and serves it through a web interface. - Source: dev.to / over 1 year ago
  • New Mailcatcher docker image using Alpine 3.16.1
    I just upgraded to Alpine Linux 3.16.1 This is an important upgrade as it fixes 2 major issues: - busybox CVE-2022-30065 - openssl CVE-2022-2097 Related information: Mailcatcher as a docker image using Alpine Linux 3.16.1: https://hub.docker.com/r/stpaquet/alpinemailcatcher Github repo: https://github.com/spaquet/docker-alpine-mailcatcher Mailcatcher: https://mailcatcher.me. Source: almost 2 years ago
  • New Mailcatcher docker image using Alpine 3.16.1
    Mailcatcher: https://mailcatcher.me. Source: almost 2 years ago
View more

OpenSMTPD mentions (2)

  • Has anyone setup a Linux based internal only smtp relay?
    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 derivatives. I use it in my environment on OpenBSD. Source: about 1 year ago
  • DKIM Migration: Rpamd instead of DKIMproxy out on OpenBSD / OpenSMTPD
    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 / almost 3 years ago

What are some alternatives?

When comparing MailCatcher and OpenSMTPD, you can also consider the following products

MailHog - MailHog is an email testing tool inspired by MailCatcher, but easier to install.

Postfix - Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail.

Mailtrap - Email Delivery Platform that delivers just in time.
 Great for businesses and individuals.

sSMTP - sSMTP is a simple MTA to deliver mail from a computer to a mail server.

FakeSMTP - FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily.

Exim - Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet.