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Papercut SMTP

Papercut SMTP is a free, open-source desktop app for Windows. Papercut SMTP -- The Simple Desktop Email Server. It has 3,339 GitHub stars and is released under the Apache-2.0 license. Its source code is on GitHub at ChangemakerStudios/Papercut-SMTP.

github.com/ChangemakerStudios/Papercut-SMTP (opens in a new tab)

  • Windows
  • Other
  • Actively maintained
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About Papercut SMTP

Papercut SMTP is a 2-in-1 quick email viewer and built-in SMTP server for development. Point your application at localhost:25 and every email it sends is caught, displayed instantly, and never delivered anywhere — body, HTML, headers, attachments, and raw bits included.

Install Papercut SMTP

Package names found in the project's README. Each links to its package page so you can check the publisher first.

winget (Windows)
winget install ChangemakerStudios.Papercut-SMTP

Package page (opens in a new tab)

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FAQ

Papercut SMTP FAQ

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What is Papercut SMTP?

Papercut SMTP is a free, open-source desktop app for Windows. Papercut SMTP -- The Simple Desktop Email Server. It has 3,339 GitHub stars and is released under the Apache-2.0 license. Its source code is on GitHub at ChangemakerStudios/Papercut-SMTP.

Is Papercut SMTP free and open source?

Yes. Papercut SMTP's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.

How do I install Papercut SMTP?

winget: winget install ChangemakerStudios.Papercut-SMTP. The commands are on this page. Installers are also on its GitHub Releases page (latest: 7.8.0).

Is Papercut SMTP still maintained?

The repository's most recent commit was on Sep 27, 2026. appsgit only lists apps whose repository had a commit in the last six months.