smtp4dev - the fake SMTP email server for development and testing. A dummy SMTP server for Windows, Linux, Mac OS-X (and maybe elsewhere where .NET Core is available). Lets you test your application without spamming your real customers.

Features

  • OpenAPI/Swagger API
  • IMAP access to retrieve and delete messages
  • TLS/SSL with implicit and STARTTLS modes and auto self-signed cert generation
  • Multiple mailboxes along with rules to control what message goes where
  • Reply, compose and relay messages including rules to auto relay
  • Viewport size switcher to simulate mobile etc
  • Multipart MIME inspector
  • HTML compatibility report and HTML validation
  • Scripting expressions including error simulation

Project Samples

smtp4dev Screenshot 1

Project Activity

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Categories

Email Servers

License

BSD License

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smtp4dev Web Site

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Additional Project Details

Operating Systems

Linux, Mac, Windows

Programming Language

C#

Related Categories

C# Email Servers

Registered

2024-06-19
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