maildirsink is an open-source CLI tool for developers to receive emails via SMTP and save them in Maildir or JSON format. It is designed for development and testing environments, allowing users to test email delivery workflows without sending real emails. The tool supports easy integration into local setups and is MIT licensed.
In the Other dev tools space, maildirsink takes a focused approach. It focuses on testing email delivery in development environments without sending real emails. maildirsink is an open-source project aimed at developers. The project is open source (MIT). It runs on the command line, and it can be self-hosted.
Behind maildirsink is sogatat, and the product first shipped in 2026. The project is developed in the open on GitHub with 2 commits in the last 90 days. Among its 5 catalogued features are SMTP receiver, maildir export, and JSON export.
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