MailKit 3.5.0
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 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.
No packages depend on MailKit.
* Fixed bitmasking logic in SmtpClient.cs for deciding whether to use the BDAT command.
* Fixed HttpProxyClient to call GetConnectCommand() *before* connecting a socket to prevent memory leaks when connecting fails.
* Improved the IMAP BODYSTRUCTURE parser to better handle broken responses.
* Fixed bug in Envelope.Parse/TryParse when given `(NIL NIL "" "localhost")` (issue #1471)
* Fixed SMTP client logic to calculate the needed bytes before converting commands into into the output buffer. (issue #1498)
* Fixed SmtpClient to replace _'s with -'s in the default LocalDomain string (used in HELO/EHLO commands). (issue #1501)
.NET Framework 4.6.2
- System.Threading.Tasks.Extensions (>= 4.5.4)
- MimeKit (>= 3.5.0)
.NET Framework 4.7
- System.Threading.Tasks.Extensions (>= 4.5.4)
- MimeKit (>= 3.5.0)
.NET Framework 4.8
- System.Threading.Tasks.Extensions (>= 4.5.4)
- MimeKit (>= 3.5.0)
.NET 6.0
- MimeKit (>= 3.5.0)
.NET Standard 2.0
- System.Threading.Tasks.Extensions (>= 4.5.4)
- MimeKit (>= 3.5.0)
.NET Standard 2.1
- MimeKit (>= 3.5.0)
| Version | Downloads | Last updated |
|---|---|---|
| 4.12.1 | 0 | 05/17/2025 |
| 4.12.0 | 0 | 04/29/2025 |
| 4.11.0 | 0 | 03/09/2025 |
| 4.10.0 | 0 | 01/26/2025 |
| 4.9.0 | 0 | 12/10/2024 |
| 4.8.0 | 0 | 09/29/2024 |
| 4.7.1.1 | 0 | 07/15/2024 |
| 4.7.1 | 0 | 07/12/2024 |
| 4.7.0 | 0 | 06/29/2024 |
| 4.6.0 | 0 | 05/17/2024 |
| 4.5.0 | 0 | 04/13/2024 |
| 4.4.0 | 0 | 03/02/2024 |
| 4.3.0 | 0 | 11/11/2023 |
| 4.2.0 | 0 | 09/02/2023 |
| 4.1.0 | 17 | 01/13/2024 |
| 4.0.0 | 19 | 06/11/2023 |
| 3.6.0 | 24 | 06/12/2023 |
| 3.5.0 | 23 | 06/11/2023 |
| 3.4.3 | 23 | 06/12/2023 |
| 3.4.2 | 20 | 06/12/2023 |
| 3.4.1 | 21 | 06/11/2023 |
| 3.4.0 | 20 | 06/11/2023 |
| 3.3.0 | 17 | 06/11/2023 |
| 3.2.0 | 20 | 06/11/2023 |
| 3.1.1 | 24 | 06/12/2023 |
| 3.1.0 | 25 | 06/11/2023 |
| 3.0.0 | 26 | 06/12/2023 |
| 2.15.0 | 18 | 02/19/2024 |
| 2.14.0 | 20 | 02/19/2024 |
| 2.13.0 | 18 | 02/19/2024 |
| 2.12.0 | 20 | 02/18/2024 |
| 2.11.1 | 22 | 02/19/2024 |
| 2.11.0 | 20 | 02/19/2024 |
| 2.10.1 | 23 | 02/19/2024 |
| 2.10.0 | 22 | 02/19/2024 |
| 2.9.0 | 21 | 06/12/2023 |
| 2.8.0 | 22 | 06/11/2023 |
| 2.7.0 | 21 | 06/11/2023 |
| 2.6.0 | 22 | 06/28/2022 |
| 2.5.2 | 25 | 05/16/2023 |
| 2.5.1 | 22 | 06/11/2023 |
| 2.5.0 | 22 | 06/11/2023 |
| 2.4.1 | 19 | 06/11/2023 |
| 2.4.0.1 | 21 | 09/30/2023 |
| 2.4.0 | 24 | 06/11/2023 |
| 2.3.2 | 23 | 06/11/2023 |
| 2.3.1.6 | 23 | 08/26/2023 |
| 2.3.1 | 24 | 06/11/2023 |
| 2.3.0 | 25 | 06/11/2023 |
| 2.2.0 | 22 | 06/12/2023 |
| 2.1.5.1 | 22 | 08/29/2023 |
| 2.1.4 | 21 | 02/19/2024 |
| 2.1.3 | 20 | 06/11/2023 |
| 2.1.2 | 24 | 06/11/2023 |
| 2.1.1 | 23 | 06/11/2023 |
| 2.1.0.3 | 22 | 09/22/2023 |
| 2.0.7 | 23 | 06/12/2023 |
| 2.0.6 | 24 | 06/11/2023 |
| 2.0.5 | 25 | 06/11/2023 |
| 2.0.4 | 24 | 12/25/2023 |
| 2.0.3 | 20 | 06/12/2023 |
| 2.0.2 | 25 | 06/10/2023 |
| 2.0.1 | 24 | 06/12/2023 |
| 2.0.0 | 23 | 06/11/2023 |
| 1.22.0 | 19 | 02/18/2024 |
| 1.20.0 | 19 | 02/19/2024 |
| 1.18.1.1 | 17 | 08/26/2023 |
| 1.18.1 | 23 | 02/19/2024 |
| 1.18.0 | 20 | 02/18/2024 |
| 1.16.2 | 23 | 02/18/2024 |
| 1.16.1 | 18 | 02/18/2024 |
| 1.16.0 | 24 | 05/17/2023 |
| 1.14.2 | 21 | 02/18/2024 |
| 1.12.0 | 22 | 02/19/2024 |
| 1.10.2 | 22 | 02/19/2024 |
| 1.10.1 | 19 | 02/19/2024 |
| 1.10.0 | 23 | 02/18/2024 |