Software Alternatives & Reviews

OpenSMTPD VS Mailosaur

Compare OpenSMTPD VS Mailosaur and see what are their differences

OpenSMTPD logo OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...

Mailosaur logo Mailosaur

Email Testing for QA & Development Teams.
  • OpenSMTPD Landing page
    Landing page //
    2019-03-05
  • Mailosaur Landing page
    Landing page //
    2023-09-22

OpenSMTPD videos

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

Mailosaur videos

No Mailosaur videos yet. You could help us improve this page by suggesting one.

+ Add video

Category Popularity

0-100% (relative to OpenSMTPD and Mailosaur)
SMTP Server
100 100%
0% 0
Email
35 35%
65% 65
Email Testing
0 0%
100% 100
MTA
100 100%
0% 0

User comments

Share your experience with using OpenSMTPD and Mailosaur. For example, how are they different and which one is better?
Log in or Post with

Reviews

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

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.

Mailosaur Reviews

We have no reviews of Mailosaur yet.
Be the first one to post

Social recommendations and mentions

Based on our record, Mailosaur should be more popular than OpenSMTPD. It has been mentiond 4 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.

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

Mailosaur mentions (4)

  • Effective Test Strategies for Testing Front-end Applications using LaunchDarkly Feature Flags and Cypress. Part2: testing
    The proper solution to tests sharing state would be randomization. Unless we are locked to real hardware - even then there is virtualization - we can randomize anything. We saw an example of this in the blog post about email testing , under the section Achieving Stateless tests with unique emails. With mailosaur any-name@unique-serverId.mailosaur.io went to that unique email server inbox, and we differentiated... - Source: dev.to / about 2 years ago
  • Test emails effortlessly with Cypress, Mailosaur and cy-spok
    There are plenty of email testing solutions available, and combinations of test frameworks that integrate with them. For the code snippets and working examples, we will be using Cypress and Mailosaur, but the ideas should generally apply to any tuple of email services and test automation frameworks. - Source: dev.to / over 2 years ago
  • Ask HN: Twilio blocked our account and with it hundreds of our customers
    Somewhat related anecdote. Whilst we didn't get cut off, we found a huge drop-off in time to receive, and the quality of, support from our live chat/support messaging provider. Having been a customer since our launch [1], and very early after theirs, it has been really sad and frustrating to see that friendly distrupter energy zap out of the service. I get why businesses go through that changes like this during... - Source: Hacker News / about 3 years ago
  • Can you recommend an automation tool or library for testing received emails?
    We have enjoyed using mailosaur. Also makes it easy to see cc, bccs, etc at a glance. Source: about 3 years ago

What are some alternatives?

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

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.

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

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

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