MailKit 2.4.0

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There is a newer version of this package available.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 2.4.0
dotnet add package MailKit --version 2.4.0
<PackageReference Include="MailKit" Version="2.4.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add MailKit --version 2.4.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Release Notes

* Added work-around for IMAP ENVELOPE responses that do not include an In-Reply-To token. (issue #932)
* Dropped support for WindowsPhone/Universal v8.1.
* Added a net48 assembly to the NuGet package which supports TLS v1.3.
* Added work-around for Yandex IMAP servers to disconnect immediately upon `* BYE`. (issue #938)
* Fixed ImapClient.Idle[Async](). (issue #942)
* Added work-around for Lotus Domino where it adds extra ()'s around some FETCH items. (issue #943)

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 8,324 2/15/2020
2.5.0 61,025 1/18/2020
2.4.1 245,764 11/10/2019
2.4.0.1 28,842 11/5/2019
2.4.0 5,986 11/3/2019
2.3.2 110,409 10/12/2019
2.3.1.6 241,524 9/9/2019
2.3.1 11,421 9/8/2019
2.3.0 183,072 8/24/2019
2.2.0 606,782 6/11/2019
2.1.5.1 244,868 5/13/2019
2.1.4 196,725 4/13/2019
2.1.3 396,927 2/24/2019
2.1.2 447,332 12/30/2018
2.1.1 90,200 12/17/2018
2.1.0.3 57,647 12/7/2018
2.0.7 182,545 10/28/2018
2.0.6 537,773 8/4/2018
2.0.5 194,107 7/7/2018
2.0.4 275,708 5/25/2018
2.0.3 276,004 4/15/2018
2.0.2 91,803 3/18/2018
2.0.1 464,533 1/6/2018
2.0.0 51,143 12/22/2017
1.22.0 225,452 11/24/2017
1.20.0 173,409 10/28/2017
1.18.1.1 399,663 9/4/2017
1.18.1 8,053 9/3/2017
1.18.0 108,234 8/7/2017
1.16.2 315,401 7/1/2017
1.16.1 281,114 5/5/2017
1.16.0 64,679 4/21/2017
1.14.2 35,101 4/12/2017
1.12.0 99,558 3/12/2017
1.10.2 100,568 1/28/2017
1.10.1 145,059 12/4/2016
1.10.0 353,385 10/31/2016