smtp4dev

Cross-platform dummy SMTP server.

Visit smtp4dev Docs

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Category	Email Testing & Verification
Authentication	No auth
Pricing	Free
Source	Open Source
Website	https://github.com/rnwood/smtp4dev
Docs	https://github.com/rnwood/smtp4dev
Last checked	2026-10-14
As JSON	/api/v1/directory/smtp4dev.json