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, Linux, SaaS and Mac apps. The best smtp4dev alternative is Mailcatch.app, which is free. Other great apps like smtp4dev are MailMug.net, Papercut, FakeSMTP and Mailtrap.
An email sandbox to inspect and debug emails in dev, staging, and QA environments before sending them to recipients in production.
Mailcatch.app is the most popular Web-based alternative to smtp4dev.
Mailcatch.app is the most popular free alternative to smtp4dev.
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...
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.
Papercut is the most popular Windows alternative to smtp4dev.
Papercut is the most popular Open Source alternative to smtp4dev.
FakeSMTP is a Free Fake SMTP Server with GUI for testing emails in applications easily. It is written in Java.
FakeSMTP is the most popular Mac & Linux alternative to smtp4dev.
Mailtrap is an Email Delivery Platform for businesses and individuals to Test, Send, and Control their email infrastructure performance.
one is a local system the other is an online service
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.
Mailosaur is the most popular commercial alternative to smtp4dev.
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.
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.
Cross-Platform with TLS support.
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.
testmail.app is the most popular SaaS alternative to smtp4dev.
LunaticSMTP is a dummy SMTP server with desktop GUI for testing email sending applications.
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.
MailDev is the most popular Self-Hosted alternative to smtp4dev.
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smtp4dev is a local system, mailtrap is an online service