MailKit 2.10.0
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 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.
No packages depend on MailKit.
- Don't enable support for TLS v1.1 by default anymore. (issue #1077)
- Added support for the SCRAM-SHA-512 SASL mechanism. (issue #1097)
- Added support for the OAUTHBEARER SASL mechanism.
- Updated SSL certificate info for the common mail servers (GMail, outlook.com, Yahoo! Mail, etc).
- Improved the SslHandshakeException error message to report common mistakes like trying to initiate an SSL connection on a non-SSL port.
- Improved IMAP's "Unexpected token" exception messages a bit
- Updated code to use ArrayPools from System.Buffers.
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
userFlags argument now take an IEnumerable 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));
| Version | Downloads | Last updated |
|---|---|---|
| 4.14.1 | 2 | 01/21/2026 |
| 4.14.0 | 3 | 01/20/2026 |
| 4.13.0 | 3 | 01/20/2026 |
| 4.12.1 | 3 | 01/20/2026 |
| 4.12.0 | 3 | 01/20/2026 |
| 4.11.0 | 5 | 01/16/2026 |
| 4.10.0 | 3 | 01/20/2026 |
| 4.9.0 | 3 | 01/21/2026 |
| 4.8.0 | 3 | 01/21/2026 |
| 4.7.1.1 | 2 | 01/20/2026 |
| 4.7.1 | 3 | 01/21/2026 |
| 4.7.0 | 3 | 01/21/2026 |
| 4.6.0 | 3 | 01/21/2026 |
| 4.5.0 | 3 | 01/21/2026 |
| 4.4.0 | 3 | 01/21/2026 |
| 4.3.0 | 2 | 01/21/2026 |
| 4.2.0 | 2 | 01/21/2026 |
| 4.1.0 | 3 | 01/21/2026 |
| 4.0.0 | 3 | 01/21/2026 |
| 3.6.0 | 3 | 01/21/2026 |
| 3.5.0 | 3 | 01/21/2026 |
| 3.4.3 | 2 | 01/21/2026 |
| 3.4.2 | 2 | 01/21/2026 |
| 3.4.1 | 3 | 01/21/2026 |
| 3.4.0 | 2 | 01/21/2026 |
| 3.3.0 | 2 | 01/21/2026 |
| 3.2.0 | 2 | 01/21/2026 |
| 3.1.1 | 3 | 01/21/2026 |
| 3.1.0 | 3 | 01/21/2026 |
| 3.0.0 | 3 | 01/21/2026 |
| 2.15.0 | 3 | 01/20/2026 |
| 2.14.0 | 3 | 01/20/2026 |
| 2.13.0 | 3 | 01/20/2026 |
| 2.12.0 | 3 | 01/20/2026 |
| 2.11.1 | 3 | 01/21/2026 |
| 2.11.0 | 3 | 01/20/2026 |
| 2.10.1 | 3 | 01/20/2026 |
| 2.10.0 | 3 | 01/20/2026 |
| 2.9.0 | 3 | 01/21/2026 |
| 2.8.0 | 3 | 01/21/2026 |
| 2.7.0 | 2 | 01/21/2026 |
| 2.6.0 | 3 | 01/21/2026 |
| 2.5.2 | 2 | 01/21/2026 |
| 2.5.1 | 3 | 01/21/2026 |
| 2.5.0 | 3 | 01/21/2026 |
| 2.4.1 | 2 | 01/21/2026 |
| 2.4.0.1 | 3 | 01/20/2026 |
| 2.4.0 | 2 | 01/21/2026 |
| 2.3.2 | 2 | 01/21/2026 |
| 2.3.1.6 | 3 | 01/20/2026 |
| 2.3.1 | 2 | 01/21/2026 |
| 2.3.0 | 2 | 01/21/2026 |
| 2.2.0 | 2 | 01/21/2026 |
| 2.1.5.1 | 3 | 01/20/2026 |
| 2.1.4 | 2 | 01/21/2026 |
| 2.1.3 | 2 | 01/21/2026 |
| 2.1.2 | 2 | 01/21/2026 |
| 2.1.1 | 3 | 01/21/2026 |
| 2.1.0.3 | 3 | 01/20/2026 |
| 2.0.7 | 2 | 01/21/2026 |
| 2.0.6 | 2 | 01/21/2026 |
| 2.0.5 | 3 | 01/21/2026 |
| 2.0.4 | 2 | 01/21/2026 |
| 2.0.3 | 2 | 01/21/2026 |
| 2.0.2 | 2 | 01/21/2026 |
| 2.0.1 | 3 | 01/21/2026 |
| 2.0.0 | 2 | 01/21/2026 |
| 1.22.0 | 3 | 01/20/2026 |
| 1.20.0 | 2 | 01/20/2026 |
| 1.18.1.1 | 2 | 01/20/2026 |
| 1.18.1 | 2 | 01/21/2026 |
| 1.18.0 | 2 | 01/20/2026 |
| 1.16.2 | 3 | 01/20/2026 |
| 1.16.1 | 2 | 01/21/2026 |
| 1.16.0 | 2 | 01/20/2026 |
| 1.14.2 | 3 | 01/20/2026 |
| 1.12.0 | 2 | 01/20/2026 |
| 1.10.2 | 3 | 01/20/2026 |
| 1.10.1 | 2 | 01/21/2026 |
| 1.10.0 | 2 | 01/21/2026 |