An email and SMTP testing tool with API for developers

📫 SMTP Server Web Interface for viewing and testing emails during development.

smtp4dev - the fake smtp email server for development and testing

Papercut SMTP -- The Simple Desktop Email Server

Mini SMTP server written in golang

Disposable webmail server (similar to Mailinator) with built in SMTP, POP3, RESTful servers; no DB required.

Local, web-based mail server application. Slurp mails into oblivion!

PostfixAdmin - web based virtual user administration interface for Postfix mail servers

Create custom SMTP servers on the fly

Buggregator is a lightweight, standalone server that offers a range of debugging features for PHP applications.

Exim Mail Transport Agent - source, testsuite and documentation

A SMTP Server component written in C#

A Python Mail Server

Multi architecture simple SMTP server (postfix null relay) host for your Docker and Kubernetes containers. Based on Debian/Ubuntu/Alpine.

SMTP docker container

A tiny software that receive a smtp request (email) and send it to the specified webhook as a http post request

Simple Golang SMTP relay/proxy server

A simple SMTP Server for Testing purposes. Emails are stored in an in-memory database and rendered in a Web UI

Simple SMTP relay docker image.

The old version of Buggregator, which uses Laravel framework, is no longer being actively developed. The new beta version, built with Spiral framework, is now available at https://github.com/buggregator/spiral-app and offers significant improvements in performance and stability, as well as a lighter docker image size of around 300mb.