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.


Mailocal is described as 'A local SMTP server with email display, used mostly for development of other apps. Think unlimited Mailtrap that runs on your own computer' and is an app in the office & productivity category. There are more than 25 alternatives to Mailocal for a variety of platforms, including Web-based, Windows, Linux, Mac and SaaS apps. The best Mailocal alternative is Mailpit, which is both free and Open Source. Other great apps like Mailocal are MailHog, MailMug.net, Mailtrap and Papercut.
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.


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.



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 Mailocal.




Imitate Email is a fake SMTP server for developers and testers. It includes an embeddable widget so that testers can quickly see sent emails alongside the app they're testing.

Fake SMTP server for safe email testing. Stop accidentally spamming your customers.
Sunnybox is a fully featured hosted service for handling your email accounts. Fetch, send and analyze your emails through a single, robust API. Easy email processing for developers.



DevMail is an email sandbox service for software developers. It allows developers to capture emails from various environments and inspect HTML, text, source code, raw headers, and attachments, and improve deliverability by analyzing email spam scores.

Mailnest is an all in one email QA tool for development & testing teams in IT companies to test & improve email functionality.




Mailsnag lets you build resilient SMTP integrations while protecting you from spamming customers during testing on QA and Staging environments. It is like Chaos Monkey for SMTP integrations.



