MailKit 2.7.0

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 SCRAM-SHA-256, SCRAM-SHA-1, NTLM, DIGEST-MD5, CRAM-MD5, LOGIN, PLAIN, 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, 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.

Requires NuGet 2.12 or higher.

Install-Package MailKit -Version 2.7.0
dotnet add package MailKit --version 2.7.0
<PackageReference Include="MailKit" Version="2.7.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add MailKit --version 2.7.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

* Added a MessageSummary.Folder property and MessageThread.Message property to allow developers to thread messages from multiple IMAP folders and be able to figure out which folder each message belongs to.
* Added a work-around for IMAP servers that send a UIDNEXT response with a value of '0'. (issue #1010)
* Added an IMailFolder.Supports(FolderFeature) method so that developers can check whether a feature is supported by the folder without needing a reference to the corresponding ImapClient object in order to check the Capabilities.
* Fixed the HTTP proxy client to accept "200 OK" with an empty body as a successful connection. (issue #1015)
* Fixed the SOCKS5 proxy client to correctly send an authentication request. (issue #1019)
* Added support for customizable ProtocolLogger client/server prefixes. (issue #1024)
* Fixed an NRE in SslHandshakeException.Create() when running on Mono/Linux.
* Modified the SmtpClient to take advantage of the SMTPUTF8 extension for the `MAIL FROM` and `RCPT TO` commands even if a `options.International` is not explicitly set to `true` if any of the mailbox addresses are international addresses. (issue #1026)
* Added support for a new Important SpecialFolder (rfc8457).
* Added support for the IMAP REPLACE extension (rfc8508).
* NuGet packages now include the portable pdb's.

API Changes Since 2.0.x:

* Obsoleted SearchQuery.HasCustomFlags() and SearchQuery.DoesNotHaveCustomFlags(). These are now SearchQuery.HasKeywords() and SearchQuery.NotKeywords(), respectively.
* Obsoleted SearchQuery.DoesNotHaveFlags() in favor of SearchQuery.NotFlags().
* Obsoleted the IMessageSummary.UserFlags property in favor of IMessageSummary.Keywords.
* Obsoleted the MessageFlagsChangedEventArgs.UserFlags property in favor of MessageFlagsChangedEventArgs.Keywords.
* All IMailFolder.Fetch and IMailFolder.FetchAsync methods that took a HashSet<string> userFlags argument now take an IEnumerable<string> keywords argument. Note: this only affects you if your code used named method parameters (e.g. userFlags: myUserFlags).

Note to users upgrading from MailKit 1.x:

In order to authenticate using the XOAUTH2 SASL mechanism, you must now use the following approach:

client.Authenticate (new SaslMechanismOAuth2 (username, auth_token));

GitHub repositories (41+)

Showing the top 5 GitHub repositories that depend on MailKit:

Repository Stars
aspnetboilerplate/aspnetboilerplate
ASP.NET Boilerplate - Web Application Framework
bitwarden/server
The core infrastructure backend (API, database, Docker, etc).
duplicati/duplicati
Store securely encrypted backups in the cloud!
nopSolutions/nopCommerce
The most popular open-source eCommerce shopping cart solution based on ASP.NET Core
dodyg/practical-aspnetcore
Practical samples of aspnet core 2.1, 2.2, 3.1 and 5.0 Preview 6 projects you can use. Readme contains explanations on all projects.

Version History

Version Downloads Last updated
2.7.0 99,357 5/30/2020
2.6.0 391,039 4/4/2020
2.5.2 171,503 3/14/2020
2.5.1 258,086 2/15/2020
2.5.0 251,799 1/18/2020
2.4.1 526,626 11/10/2019
2.4.0.1 52,467 11/5/2019
2.4.0 9,102 11/3/2019
2.3.2 158,632 10/12/2019
2.3.1.6 371,071 9/9/2019
2.3.1 17,097 9/8/2019
2.3.0 293,121 8/24/2019
2.2.0 839,891 6/11/2019
2.1.5.1 313,959 5/13/2019
2.1.4 255,619 4/13/2019
2.1.3 483,358 2/24/2019
2.1.2 536,753 12/30/2018
2.1.1 104,322 12/17/2018
2.1.0.3 66,613 12/7/2018
2.0.7 216,559 10/28/2018
2.0.6 642,072 8/4/2018
2.0.5 222,074 7/7/2018
2.0.4 306,906 5/25/2018
2.0.3 303,126 4/15/2018
2.0.2 101,394 3/18/2018
2.0.1 619,191 1/6/2018
2.0.0 57,248 12/22/2017
1.22.0 247,462 11/24/2017
1.20.0 191,150 10/28/2017
1.18.1.1 431,140 9/4/2017
1.18.1 9,002 9/3/2017
1.18.0 114,426 8/7/2017
1.16.2 325,782 7/1/2017
1.16.1 305,575 5/5/2017
1.16.0 67,060 4/21/2017
1.14.2 36,151 4/12/2017
1.12.0 105,290 3/12/2017
1.10.2 106,373 1/28/2017
1.10.1 147,766 12/4/2016
1.10.0 363,199 10/31/2016