mime

  A cross-platform .NET library for IMAP, POP3, and SMTP.

翻译 - 用于IMAP，POP3和SMTP的跨平台.NET库。

  Fast, dependency-free Go package to infer binary file types based on the magic numbers header signature

翻译 - 小型，无依赖，快速的Go程序包，可基于幻数签名来推断二进制文件类型

  A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.

  A fast Golang library for media type and file extension detection, based on magic numbers