MimeKit 3.2.0

.NET 5.0 .NET Standard 2.0 .NET Framework 4.5.2
There is a newer version of this package available.
See the version list below for details.

Requires NuGet 2.12 or higher.

dotnet add package MimeKit --version 3.2.0
NuGet\Install-Package MimeKit -Version 3.2.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="MimeKit" Version="3.2.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add MimeKit --version 3.2.0
#r "nuget: MimeKit, 3.2.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install MimeKit as a Cake Addin
#addin nuget:?package=MimeKit&version=3.2.0

// Install MimeKit as a Cake Tool
#tool nuget:?package=MimeKit&version=3.2.0

MimeKit 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

Product Compatible and additional computed target framework versions.
.NET net5.0 is compatible.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 is compatible. 
.NET Framework net452 is compatible.  net46 was computed.  net461 is compatible.  net462 was computed.  net463 was computed.  net47 is compatible.  net471 was computed.  net472 was computed.  net48 is compatible.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Additional computed target framework(s)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (212)

Showing the top 5 NuGet packages that depend on MimeKit:

Package Downloads

MailKit is an Open Source cross-platform .NET mail-client library that is based on MimeKit and optimized for mobile devices. Features include: * HTTP, Socks4, Socks4a and Socks5 proxy support. * SASL Authentication via ANONYMOUS, CRAM-MD5, DIGEST-MD5, LOGIN, NTLM, OAUTHBEARER, PLAIN, SCRAM-SHA-1, SCRAM-SHA-256, SCRAM-SHA-512 and XOAUTH2. * A fully-cancellable SmtpClient with support for STARTTLS, 8BITMIME, BINARYMIME, ENHANCEDSTATUSCODES, SIZE, DSN, PIPELINING and SMTPUTF8. * A fully-cancellable Pop3Client with support for STLS, UIDL, APOP, PIPELINING, UTF8, and LANG. * A fully-cancellable ImapClient with support for ACL, QUOTA, LITERAL+, IDLE, NAMESPACE, ID, CHILDREN, LOGINDISABLED, STARTTLS, MULTIAPPEND, UNSELECT, UIDPLUS, CONDSTORE, ESEARCH, SASL-IR, COMPRESS, WITHIN, ENABLE, QRESYNC, SORT, THREAD, ANNOTATE, LIST-EXTENDED, ESORT, METADATA / METADATA-SERVER, NOTIFY, FILTERS, LIST-STATUS, SORT=DISPLAY, SPECIAL-USE / CREATE-SPECIAL-USE, SEARCH=FUZZY, MOVE, UTF8=ACCEPT / UTF8=ONLY, LITERAL-, APPENDLIMIT, STATUS=SIZE, OBJECTID, REPLACE, SAVEDATE, XLIST, and X-GM-EXT1. * Client-side sorting and threading of messages (the Ordinal Subject and the Jamie Zawinski threading algorithms are supported). * Asynchronous versions of all methods that hit the network. * S/MIME, OpenPGP, DKIM and ARC support via MimeKit. * Microsoft TNEF support via MimeKit.


netDumbster is a .Net Fake SMTP Server clone of the popular Dumbster (http://quintanasoft.com/dumbster/) netDumbster is based on the API of nDumbster (http://ndumbster.sourceforge.net/default.html) and the nice C# Email Server (CSES) written by Eric Daugherty.


MsgKit is a 100% managed C# .NET library (no PINVOKE or whatsoever) which may be used for the creation of messages (E-Mail, Appointments, Journals and Stickey Notes) that are Outlook compatible


Package Description

cloudscribe.Email.Senders The ID prefix of this package has been reserved for one of the owners of this package by NuGet.org.

Classes that provide a common interface for sending email with smtp or popular email apis including SendGrid, Mailgun, and ElasticEmail

GitHub repositories (39)

Showing the top 5 popular GitHub repositories that depend on MimeKit:

Repository Stars
Store securely encrypted backups in the cloud!
Practical samples of ASP.NET Core 8.0, 7.0, 6.0, 5.0, 3.1, 2.2, and 2.1,projects you can use. Readme contains explanations on all projects.
Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.
Clean Architecture Template for .NET 7.0 WebApi built with Multitenancy Support.
Clean Architecture Template for Blazor WebAssembly Built with MudBlazor Components.
Version Downloads Last updated
4.3.0 273,117 11/11/2023
4.2.0 1,437,254 9/2/2023
4.1.0 2,215,942 6/17/2023
4.0.0 1,814,016 4/15/2023
3.6.1 555,938 3/19/2023
3.6.0 1,578,622 3/4/2023
3.5.0 1,727,235 1/28/2023
3.4.3 2,664,216 11/25/2022
3.4.2 1,852,431 10/24/2022
3.4.1 1,772,555 9/12/2022
3.4.0 513,812 8/18/2022
3.3.0 4,304,304 6/11/2022
3.2.0 7,827,122 3/26/2022
3.1.1 3,215,060 1/30/2022
3.1.0 726,432 1/15/2022
3.0.0 2,256,799 12/11/2021
2.15.1 2,234,856 9/13/2021
2.15.0 8,917,593 8/19/2021
2.14.0 862,535 7/28/2021
2.13.0 2,583,993 6/12/2021
2.12.0 1,463,031 5/12/2021
2.11.0 2,521,562 3/12/2021
2.10.1 5,186,519 12/5/2020
2.10.0 2,353,870 11/21/2020
2.9.2 3,358,150 9/12/2020
2.9.1 3,280,924 7/11/2020
2.8.0 4,709,094 5/30/2020
2.7.0 295,740 5/19/2020
2.6.0 6,568,433 4/4/2020
2.5.2 1,112,650 3/14/2020
2.5.1 1,555,451 2/15/2020
2.5.0 1,232,086 1/18/2020
2.4.1 2,291,263 11/10/2019 204,156 11/5/2019
2.4.0 50,243 11/3/2019
2.3.2 498,228 10/12/2019
2.3.1 1,258,129 9/8/2019
2.3.0 673,873 8/24/2019
2.2.0 2,419,420 6/11/2019 1,199,348 5/13/2019
2.1.4 768,027 4/13/2019
2.1.3 1,337,118 2/24/2019
2.1.2 1,430,341 12/30/2018
2.1.1 204,006 12/16/2018
2.1.0 421,913 12/1/2018
2.0.7 645,966 10/28/2018
2.0.6 3,675,962 8/4/2018
2.0.5 634,219 7/7/2018
2.0.4 660,935 5/21/2018
2.0.3 598,158 4/14/2018
2.0.2 213,811 3/17/2018
2.0.1 1,710,739 1/6/2018
2.0.0 212,693 12/22/2017
1.22.0 884,897 11/24/2017
1.20.0 350,793 10/28/2017
1.18.1 747,706 9/3/2017
1.18.0 227,852 8/7/2017
1.16.2 509,271 7/1/2017
1.16.1 661,254 5/5/2017
1.16.0 118,829 4/21/2017
1.14.1 50,941 4/9/2017
1.14.0 151,762 4/9/2017
1.12.0 230,541 3/12/2017
1.10.1 189,406 1/28/2017
1.10.0 667,751 10/31/2016

* When initializing character encodings for netstandard and net50/net60, wrap the Reflection logic to invoke System.Text.Encoding.RegisterProvider() in a try/catch to prevents exceptions when using the netstandard version of MimeKit in a .NET Framework app. (issue #751)
* Added a work-around for Office365 `message/delivery-status` parts where all status groups after the first are base64 encoded. This seems to be a bug in Office365 where it treats the first status group as MIME entity and the following status groups as the content. (issue #250)
* Fixed the MimeMessage .ctor that takes object parameters to first check that a Message-Id header was not supplied before generating one for the message. (issue #747)
* Fixed the BestEncodingFilter logic such that if any line in binary content is > 998 and it contains nul bytes, it should recommend base64 (not quoted-printable).