mailtutan
A lightweight Rust-based SMTP server for testing and development that captures emails locally with a web interface and REST API.
What is mailtutan?
Mailtutan is an SMTP server written in Rust that simulates email delivery for testing and development purposes. It captures all incoming emails locally, providing a safe environment to test email functionality without sending messages to real addresses. The server includes a web interface and REST API for inspecting captured emails.
Developers and QA engineers who need to test email-sending functionality in applications, particularly those working on web apps, microservices, or any system that integrates with SMTP.
Mailtutan offers a lightweight, self-contained alternative to heavier testing solutions, with real-time updates, multiple storage options, and security features—all in a sub-2MB Docker image. Its Rust implementation ensures high performance and reliability.
Overview
An SMTP server for test and development environments written in Rust
Use Cases
Best For
- Testing email functionality in web applications
- Local development environments requiring SMTP simulation
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