MailKit 2.5.0

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, 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, 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.

There is a newer version of this package available.
See the version list below for details.

Requires NuGet 2.12 or higher.

Install-Package MailKit -Version 2.5.0
dotnet add package MailKit --version 2.5.0
<PackageReference Include="MailKit" Version="2.5.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add MailKit --version 2.5.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

* Ignore NIL tokens in the body-fld-lang token list. (issue #953)
* Added logic to handle unexpected <CRLF> in untagged FETCH responses. (issue #954)
* Added a way to override SmtpClient's preference for using BDAT vs DATA via a new PreferSendAsBinaryData virtual property.
* Update SslHandshakeException message to mention the possibility of SSL/TLS version mismatch. (issue #957)
* Fixed ImapFolder.GetStreamsAsync() to use an async callback delegate. (issue #958)
* Added protocol-specific interfaces that inherit from IMailFolder, IMailStore, etc. (issue #960)
* Maintain the STARTTLS capability bit flag after a STARTTLS command.
* Don't send the optional ANNOTATE parameter to SELECT/EXAMINE for SUN IMAP servers (such as Apple's IMAP servers). (issue #970)

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));

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Read more about the GitHub Usage information on our documentation.

Version History

Version Downloads Last updated
2.5.1 14,250 2/15/2020
2.5.0 72,180 1/18/2020
2.4.1 258,731 11/10/2019
2.4.0.1 29,899 11/5/2019
2.4.0 6,083 11/3/2019
2.3.2 112,688 10/12/2019
2.3.1.6 246,435 9/9/2019
2.3.1 11,733 9/8/2019
2.3.0 187,729 8/24/2019
2.2.0 615,767 6/11/2019
2.1.5.1 247,245 5/13/2019
2.1.4 198,648 4/13/2019
2.1.3 399,915 2/24/2019
2.1.2 450,825 12/30/2018
2.1.1 90,851 12/17/2018
2.1.0.3 57,867 12/7/2018
2.0.7 183,532 10/28/2018
2.0.6 540,963 8/4/2018
2.0.5 195,062 7/7/2018
2.0.4 276,778 5/25/2018
2.0.3 277,235 4/15/2018
2.0.2 92,264 3/18/2018
2.0.1 468,777 1/6/2018
2.0.0 51,321 12/22/2017
1.22.0 226,104 11/24/2017
1.20.0 173,985 10/28/2017
1.18.1.1 400,970 9/4/2017
1.18.1 8,084 9/3/2017
1.18.0 108,405 8/7/2017
1.16.2 315,685 7/1/2017
1.16.1 281,906 5/5/2017
1.16.0 64,796 4/21/2017
1.14.2 35,133 4/12/2017
1.12.0 99,687 3/12/2017
1.10.2 100,703 1/28/2017
1.10.1 145,152 12/4/2016
1.10.0 353,654 10/31/2016