smtp4dev AlternativesMail Servers and other similar apps like smtp4dev

smtp4dev is described as 'The fake SMTP email server for development and testing' and is a Mail Server in the development category. There are more than 10 alternatives to smtp4dev for a variety of platforms, including Web-based, Windows, SaaS, Linux and Mac apps. The best smtp4dev alternative is Mailcatch.app, which is free. Other great apps like smtp4dev are Papercut, FakeSMTP, Mailtrap and Mailosaur.

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The fake SMTP email server for development and testing.

More about smtp4dev
smtp4dev alternatives page was last updated May 19, 2025
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  1. Mailcatch.app icon
     3 likes
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    An email sandbox to inspect and debug emails in dev, staging, and QA environments before sending them to recipients in production.

    License model

    • FreemiumProprietary

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Online

    Mailcatch.app Features

    1.  Email testing

    Mailcatch.app VS smtp4dev

     
    • Mailcatch.app is the most popular Web-based alternative to smtp4dev.

    • Mailcatch.app is the most popular free alternative to smtp4dev.

    • Mailcatch.app is Freemium and Proprietarysmtp4dev is Free and Open Source
  2. Papercut icon
     6 likes
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    Papercut is a simplified SMTP server designed to only receive messages (not to send them on) with a GUI on top of it allowing you to see the messages it receives.

    26 Papercut alternatives

    License model

    • FreeOpen Source

    Platforms

    • Windows

    Papercut Features

    1.  SMTP Support

    Papercut VS smtp4dev

     
    • Papercut is the most popular Windows alternative to smtp4dev.

    • Papercut is the most popular Open Source alternative to smtp4dev.

    • Papercut is Free and Open Sourcesmtp4dev is also Free and Open Source
  3. FakeSMTP icon
     6 likes
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    FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily. It is written in Java.

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux

    FakeSMTP Features

    1.  Email testing

    FakeSMTP VS smtp4dev

     
    • FakeSMTP is the most popular Mac & Linux alternative to smtp4dev.

    • FakeSMTP is Free and Open Sourcesmtp4dev is also Free and Open Source
  4. Mailtrap icon
     13 likes
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    Mailtrap is an Email Delivery Platform for businesses and individuals to Test, Send, and Control their email infrastructure performance.

    30 Mailtrap alternatives

    License model

    • FreemiumProprietary

    Application type

    Country of Origin

    • PL flagPoland
    • European Union flagEU

    Platforms

    • Online

    Mailtrap Features

    1.  Email Verification
    2.  Email testing
    3.  REST API
    4.  Transactional Email
    5.  Email Forwarding
    6.  Email validation
    7.  Email tracking

    Mailtrap VS smtp4dev

     
    Comments about Mailtrap as an Alternative to smtp4dev
    Guest
    Negative Feb 5, 2018
    6

    smtp4dev is a local system, mailtrap is an online service

    Guest
    Negative Sep 19, 2024
    0

    one is a local system the other is an online service

    smtp4dev Icon
    Mailtrap icon
    • Mailtrap is Freemium and Proprietarysmtp4dev is Free and Open Source
  5. Mailosaur icon
     10 likes
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    Email Testing for QA & Development Teams. Catch every email your product sends, analyze it's contents, follow links and test deliverability all via the Mailosaur API.

    License model

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Online

    Mailosaur Features

    1.  Email testing
    2.  SMS API
    3.  SMTP Support
    4.  SMS testing
    5.  POP3 Support
    6.  Email automation

    Mailosaur VS smtp4dev

     
    • Mailosaur is the most popular commercial alternative to smtp4dev.

    • Mailosaur is Paid and Proprietarysmtp4dev is Free and Open Source
  6. DummySMTP icon
     3 likes
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    DummySMTP allows you to test the email functionality of your applications, without setting up multiple test email addresses and cluttering your inbox.

    License model

    • FreeProprietary

    Platforms

    • Software as a Service (SaaS)

    DummySMTP Features

    1.  Debugging

    DummySMTP VS smtp4dev

     
    • DummySMTP is the most popular SaaS alternative to smtp4dev.

    • DummySMTP is Free and Proprietarysmtp4dev is Free and Open Source
  7. MailMug.net icon
     2 likes
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    Capture SMTP traffic from staging and dev environments. Easily validate email content text or HTML/CSS. Utilize an Email Sandbox to thoroughly examine and troubleshoot emails within staging, development, and quality assurance (QA) environments prior to sending them to recipients...

    License model

    • FreemiumProprietary

    Application type

    Platforms

    • Online

    MailMug.net VS smtp4dev

     
  8. Copy a direct link to this comment to your clipboard

    Ethereal is a fake SMTP service, mostly aimed at Nodemailer users (but not limited to). It's a completely free anti-transactional email service where messages never get delivered.

    26 Ethereal Email alternatives

    License model

    • FreeProprietary

    Application type

    Platforms

    • Online

    Ethereal Email Features

    1.  SMTP Support
    2.  IMAP Support
    3.  POP3 Support
    4.  Email testing

    Ethereal Email VS smtp4dev

     
  9. Origami SMTP icon
     2 likes
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    Origami SMTP was created with the idea to have a fake email server for testing purposes that supported TLS. This is because the code the developer was working on at the time had several hard coded values enforcing TLS so most other solutions would not work.

    License model

    • FreeOpen Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD

    Origami SMTP Features

    1.  Support for TLS
    2.  Email testing
    3.  SMTP Support

    Origami SMTP VS smtp4dev

     
    Comments about Origami SMTP as an Alternative to smtp4dev
    Guest
    Positive Oct 9, 2017
    1

    Cross-Platform with TLS support.

    smtp4dev Icon
    Origami SMTP icon
    • Origami SMTP is Free and Open Sourcesmtp4dev is also Free and Open Source
  10. MailDev icon
     1 like
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    MailDev is a simple way to test your project's generated emails during development with an easy to use web interface that runs on your machine built on top of Node.js.

    25 MailDev alternatives

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    • Docker

    MailDev VS smtp4dev

     
    • MailDev is the most popular Self-Hosted alternative to smtp4dev.

    • MailDev is Free and Open Sourcesmtp4dev is also Free and Open Source
  11. testmail.app icon
     4 likes
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    QA tool for automating end-to-end email tests. Get unlimited private email addresses and inboxes for testing new user signups, transactional emails and drip campaigns, deliverability and spam scores, etc. Integrates with your CI/CD workflow. Includes spam testing.

    License model

    • FreemiumProprietary

    Platforms

    • Software as a Service (SaaS)

    testmail.app Features

    1.  GraphQL API
    2.  Software Testing Tool
    3.  Email testing
    4.  Custom Mailboxes

    testmail.app VS smtp4dev

     
  12. LunaticSMTP icon
     2 likes
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    LunaticSMTP is a dummy SMTP server with desktop GUI for testing email sending applications.

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • JavaFX
    • Java

    LunaticSMTP Features

    1.  Portable
    2.  Email testing
    3.  SMTP Support

    LunaticSMTP VS smtp4dev

     
12 of 21 smtp4dev alternatives