MimeKit: Releases, patches & end-of-life
QMETHODS GmbH

Lifecycle guide for MimeKit from Jeffrey Stedfast

All releases, patches, maintenance and support periods at a glance

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📅 Last update on 2026-03-09

What is MimeKit?

Automate product release and end-of-life managementMimeKit is an Open Source library for creating and parsing MIME, S/MIME and PGP messages on desktop and mobile platforms. It also supports parsing of Unix mbox files. Unlike any other .NET MIME parser, MimeKit"s parser does not need to parse string input nor does it use a TextReader. Instead, it parses raw byte streams, thus allowing it to better support undeclared 8bit text in headers as well as message bodies. It also means that MimeKit"s parser is significantly faster than other .NET MIME parsers. MimeKit"s parser also uses a real tokenizer when parsing the headers rather than regex or string.Split() like most other .NET MIME parsers. This means that MimeKit is much more RFC-compliant than any other .NET MIME parser out there, including the commercial implementations. In addition to having a far superior parser implementation, MimeKit"s object tree is not a derivative of System.Net.Mail objects and thus does not suffer from System.Net.Mail"s limitations. API documentation can be found on the web at http://www.mimekit.net/docs For those that need SMTP, POP3 or IMAP support, check out https://github.com/jstedfast/MailKit
 

The entire lifecycle of MimeKit

The following figure shows you the visualised product life cycle of MimeKit. You can see all releases with the latest patch version, the long-term support characteristics (orange flag in the green circle, the periods for version provision, maintenance and support.
MimeKit (Jeffrey Stedfast) release, version and end-of-life information
XMimeKit (Jeffrey Stedfast) release, version and end-of-life information
Figure: Release, patch and end-of-life cycle of product MimeKit (Jeffrey Stedfast)
 

Facts and figures about MimeKit

Product
MimeKit
Vendor
Jeffrey Stedfast
Latest version
4.15.1
Number of releases
4
Number of versions
79
Number of unstable versions
0
Number of versions affected by CVE
78
Licence
MIT
 
 

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Lukas Böttcher
Lukas Böttcher
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