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mailslurp VS OpenSMTPD

Compare mailslurp VS OpenSMTPD and see what are their differences

mailslurp logo mailslurp

Email and SMS testing and development platform for software engineers and QA testers

OpenSMTPD logo OpenSMTPD

OpenSMTPD is a FREE implementation of the server-side SMTP protocol as defined by RFC 5321, with...
  • mailslurp Landing page
    Landing page //
    2023-05-03

Create email addresses and phone numbers on demand in code, tests and using online dashboards. Test applications end-to-end with real email and SMS using REST APIs, SDKs, and custom mail servers.

  • OpenSMTPD Landing page
    Landing page //
    2019-03-05

mailslurp

$ Details
freemium
Platforms
Linux Mac OSX Web Windows Mobile
Release Date
2017 January

OpenSMTPD

Pricing URL
-
$ Details
Platforms
-
Release Date
-

mailslurp features and specs

  • Temporary Email Generation
    MailSlurp allows users to generate temporary email addresses for testing, enhancing privacy and avoiding spam in their main email accounts.
  • API Integration
    Developers can use MailSlurp's API to automate email testing and integration with applications, which streamlines development workflows.
  • Email Receiving and Sending
    MailSlurp provides functionalities to both send and receive emails, which is useful for comprehensive email testing scenarios.
  • Customizable Domains
    Users have the option to create email addresses using custom domains, allowing for more tailored and professional testing environments.
  • Webhooks and Callbacks
    MailSlurp supports webhooks and callbacks for real-time notifications of incoming emails, adding efficiency to automated testing processes.

Possible disadvantages of mailslurp

  • Learning Curve
    New users may face a learning curve in integrating and using the various features offered by MailSlurp, especially API-related functionalities.
  • Subscription Costs
    While MailSlurp offers some free features, advanced usage and higher limits require a paid subscription, which might not be suitable for all budgets.
  • Overhead for Simple Tasks
    For simple email verification tasks, MailSlurp might introduce more complexity than necessary, as some features may exceed the basic requirements.
  • Dependency on External Service
    Using an external service like MailSlurp introduces dependency risks, such as potential downtime or service changes affecting critical workflows.

OpenSMTPD features and specs

  • Simplicity
    OpenSMTPD is designed to be simple and straightforward, which makes it easier to configure and manage compared to other mail transfer agents. Its configuration syntax is clean and readable.
  • Security-focused
    One of the main goals of OpenSMTPD is to provide a secure mail transfer agent. It is developed by the OpenBSD team, which is known for its emphasis on security.
  • Lightweight
    OpenSMTPD is a lightweight solution, using minimal system resources, making it suitable for systems with lower hardware capabilities or for those looking to optimize performance.
  • Integration with OpenBSD
    As a project developed by the OpenBSD team, OpenSMTPD integrates well with OpenBSD, taking advantage of the system's security features and optimizations.
  • Active Community
    OpenSMTPD has an active development community, which provides timely updates, patches, and support, helping to keep the software secure and reliable.

Possible disadvantages of OpenSMTPD

  • Feature Limitation
    Compared to more established mail servers like Postfix or Exim, OpenSMTPD may lack some advanced features or integrations that larger enterprises might require.
  • Limited Documentation
    The documentation for OpenSMTPD, while improving, is not as comprehensive as that for more widely-used MTAs, which can create a steeper learning curve for new administrators.
  • Less Third-Party Support
    Due to its lesser adoption compared to other MTAs, there might be fewer third-party tools, plugins, and resources available for extending OpenSMTPD's capabilities.
  • Platform Specific Optimization
    While its integration with OpenBSD is a strength, it may not be as optimized for other operating systems, possibly leading to a less efficient experience outside the BSD ecosystem.
  • Community-Centric Development
    Being a smaller, community-driven project, OpenSMTPD may not offer the same level of support or development resources as more commercially backed mail server solutions.

mailslurp 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 mailslurp and OpenSMTPD)
Email
74 74%
26% 26
SMTP Servers
0 0%
100% 100
Email Testing
100 100%
0% 0
MTA
0 0%
100% 100

Questions & Answers

As answered by people managing mailslurp and OpenSMTPD.

What makes your product unique?

mailslurp's answer

Test functions for true integration testing and messaging automation

Why should a person choose your product over its competitors?

mailslurp's answer

MailSlurp is the most comprehensive email and SMS automation platform

User comments

Share your experience with using mailslurp and OpenSMTPD. For example, how are they different and which one is better?
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Reviews

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

mailslurp Reviews

Top 15 Self-hosted open-source free web-based email clients
MailSlurper is a free Libre mail server and SMTP webmail client created by Adam Presley.
Source: medevel.com

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, OpenSMTPD seems to be more popular. It has been mentiond 2 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.

mailslurp mentions (0)

We have not tracked any mentions of mailslurp yet. Tracking of mailslurp recommendations started around Mar 2021.

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: over 3 years 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 / about 5 years ago

What are some alternatives?

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

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

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

Mailosaur - Email Testing for QA & Development Teams.

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

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

Sendmail - Sendmail is a general purpose internetwork email routing facility that supports many kinds of...