MailKit 4.1.0

Prefix Reserved

.NET 6.0 .NET Standard 2.0 .NET Framework 4.6.2

There is a newer version of this package available.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

Requires NuGet 2.12 or higher.

dotnet add package MailKit --version 4.1.0

NuGet\Install-Package MailKit -Version 4.1.0

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="MailKit" Version="4.1.0" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="MailKit" Version="4.1.0" />
                    

                            Directory.Packages.props

<PackageReference Include="MailKit" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add MailKit --version 4.1.0

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: MailKit, 4.1.0"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package MailKit@4.1.0

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=MailKit&version=4.1.0
                    

                            Install as a Cake Addin

#tool nuget:?package=MailKit&version=4.1.0
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

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.

Product	Compatible and additional computed target framework versions.
.NET	net5.0 was computed. net5.0-windows was computed. net6.0 is compatible. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.
.NET Core	netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed.
.NET Standard	netstandard2.0 is compatible. netstandard2.1 is compatible.
.NET Framework	net461 was computed. net462 is compatible. net463 was computed. net47 is compatible. net471 was computed. net472 was computed. net48 is compatible. net481 was computed.
MonoAndroid	monoandroid was computed.
MonoMac	monomac was computed.
MonoTouch	monotouch was computed.
Tizen	tizen40 was computed. tizen60 was computed.
Xamarin.iOS	xamarinios was computed.
Xamarin.Mac	xamarinmac was computed.
Xamarin.TVOS	xamarintvos was computed.
Xamarin.WatchOS	xamarinwatchos was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

.NETFramework 4.6.2
- MimeKit (>= 4.1.0)
- System.Formats.Asn1 (>= 7.0.0)
- System.Threading.Tasks.Extensions (>= 4.5.4)
.NETFramework 4.7
- MimeKit (>= 4.1.0)
- System.Formats.Asn1 (>= 7.0.0)
- System.Threading.Tasks.Extensions (>= 4.5.4)
.NETFramework 4.8
- MimeKit (>= 4.1.0)
- System.Formats.Asn1 (>= 7.0.0)
- System.Threading.Tasks.Extensions (>= 4.5.4)
.NETStandard 2.0
- MimeKit (>= 4.1.0)
- System.Formats.Asn1 (>= 7.0.0)
- System.Threading.Tasks.Extensions (>= 4.5.4)
.NETStandard 2.1
- MimeKit (>= 4.1.0)
net6.0
- MimeKit (>= 4.1.0)

NuGet packages (1.2K)

Showing the top 5 NuGet packages that depend on MailKit:

Package	Downloads
Umbraco.Cms.Infrastructure Contains the infrastructure assembly needed to run Umbraco CMS.	15.8M
NETCore.MailKit MailKit extension for asp.net core. Easy send email in asp.net core project.	7.9M
Serilog.Sinks.Email Send Serilog events as SMTP email using MailKit.	7.3M
Abp.MailKit Abp.MailKit	5.0M
NLog.MailKit NLog Mail Target for .NET Core & .NET Standard 2.0+ using MailKit. This package add the mail target to NLog and has the same options* as the original Mail Target. If the mail target was already available on your platform, this package will overwrite the original Mail Target. * Compared to the original MailTarget, the following options aren't implemented: - NTLM auth * MailKit gives more control of the sockets, so you get the `secureSocketOption` option for free!	2.1M

GitHub repositories (145)

Showing the top 20 popular GitHub repositories that depend on MailKit:

Repository	Stars
ardalis/CleanArchitecture Clean Architecture Solution Template: A proven Clean Architecture Template for ASP.NET Core 9	17.6K
bitwarden/server Bitwarden infrastructure/backend (API, database, Docker, etc).	17.3K
abpframework/abp Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.	13.9K
duplicati/duplicati Store securely encrypted backups in the cloud!	13.3K
Sonarr/Sonarr Smart PVR for newsgroup and bittorrent users.	12.5K
Radarr/Radarr Movie organizer/manager for usenet and torrent users.	12.3K
aspnetboilerplate/aspnetboilerplate ASP.NET Boilerplate - Web Application Framework	12.0K
dodyg/practical-aspnetcore Practical samples of ASP.NET Core 10 RC 1, 9, 8.0, 7.0, 6.0, 5.0, 3.1, 2.2, and 2.1,projects you can use. Readme contains explanations on all projects.	10.2K
nopSolutions/nopCommerce ASP.NET Core eCommerce software. nopCommerce is a free and open-source shopping cart.	9.8K
Kareadita/Kavita Kavita is a fast, feature rich, cross platform reading server. Built with the goal of being a full solution for all your reading needs. Setup your own server and share your reading collection with your friends and family.	9.1K
OrchardCMS/OrchardCore Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.	7.9K
btcpayserver/btcpayserver Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.	7.2K
fullstackhero/dotnet-starter-kit Production Grade Cloud-Ready .NET 9 Starter Kit (Web API + Blazor Client) with Multitenancy Support, and Clean/Modular Architecture that saves roughly 200+ Development Hours! All Batteries Included.	6.1K
win-acme/win-acme A simple ACME client for Windows (for use with Let's Encrypt et al.)	5.5K
Prowlarr/Prowlarr Prowlarr is an indexer manager/proxy built on the popular *arr .net/reactjs base stack to integrate with your various PVR apps, supporting management of both Torrent Trackers and Usenet Indexers.	5.4K
umbraco/Umbraco-CMS Umbraco is a free and open source .NET content management system helping you deliver delightful digital experiences.	5.0K
immense/Remotely A remote control and remote scripting solution, built with .NET 8, Blazor, and SignalR.	4.9K
Lidarr/Lidarr Looks and smells like Sonarr but made for music.	4.6K
simplcommerce/SimplCommerce A simple, cross platform, modulith ecommerce system built on .NET	4.4K
jamesmh/coravel Near-zero config .NET library that makes advanced application features like Task Scheduling, Caching, Queuing, Event Broadcasting, and more a breeze!	4.2K

Version	Downloads	Last Updated
4.14.1	133,369	10/13/2025
4.14.0	291,211	9/28/2025
4.13.0	2,576,025	6/25/2025
4.12.1	1,511,703	5/17/2025
4.12.0	866,680	4/29/2025
4.11.0	2,898,117	3/9/2025
4.10.0	2,651,312	1/26/2025
4.9.0	2,842,344	12/10/2024
4.8.0	6,923,662	9/29/2024
4.7.1.1	6,820,129	7/15/2024
4.7.1	527,086	7/12/2024
4.7.0	762,169	6/29/2024
4.6.0	2,933,353	5/17/2024
4.5.0	1,971,768	4/13/2024
4.4.0	2,720,458	3/2/2024
4.3.0	8,165,702	11/11/2023
4.2.0	3,594,593	9/2/2023
4.1.0	4,600,231	6/17/2023
4.0.0	3,351,654	4/15/2023
3.6.0	3,148,945	3/4/2023
3.5.0	2,797,306	1/28/2023
3.4.3	4,034,171	11/25/2022
3.4.2	2,613,806	10/24/2022
3.4.1	2,303,071	9/12/2022
3.4.0	357,337	9/5/2022
3.3.0	6,214,559	6/12/2022
3.2.0	11,720,094	3/26/2022
3.1.1	4,502,906	1/30/2022
3.1.0	931,453	1/15/2022
3.0.0	3,639,404	12/11/2021
2.15.0	12,879,034	8/19/2021
2.14.0	940,120	7/28/2021
2.13.0	3,063,302	6/12/2021
2.12.0	1,457,152	5/12/2021
2.11.1	2,639,320	3/16/2021
2.11.0	176,306	3/12/2021
2.10.1	5,852,248	1/2/2021
2.10.0	3,589,730	11/21/2020
2.9.0	3,570,771	9/12/2020
2.8.0	3,674,585	7/11/2020
2.7.0	3,353,149	5/30/2020
2.6.0	8,827,532	4/4/2020
2.5.2	1,443,248	3/14/2020
2.5.1	1,523,473	2/15/2020
2.5.0	1,252,662	1/18/2020
2.4.1	2,448,135	11/10/2019
2.4.0.1	120,817	11/5/2019
2.4.0	28,309	11/3/2019
2.3.2	557,469	10/12/2019
2.3.1.6	1,277,920	9/9/2019
2.3.1	104,170	9/8/2019
2.3.0	750,949	8/24/2019
2.2.0	2,493,978	6/11/2019
2.1.5.1	1,013,187	5/13/2019
2.1.4	681,368	4/13/2019
2.1.3	1,321,590	2/24/2019
2.1.2	1,449,312	12/30/2018
2.1.1	218,877	12/17/2018
2.1.0.3	222,295	12/7/2018
2.0.7	954,967	10/28/2018
2.0.6	3,096,194	8/4/2018
2.0.5	518,661	7/7/2018
2.0.4	796,851	5/25/2018
2.0.3	761,076	4/15/2018
2.0.2	239,562	3/18/2018
2.0.1	1,795,837	1/6/2018
2.0.0	212,627	12/22/2017
1.22.0	725,589	11/24/2017
1.20.0	615,935	10/28/2017
1.18.1.1	767,348	9/4/2017
1.18.1	23,218	9/3/2017
1.18.0	221,881	8/7/2017
1.16.2	532,558	7/1/2017
1.16.1	731,606	5/5/2017
1.16.0	93,526	4/21/2017
1.14.2	48,311	4/12/2017
1.12.0	257,499	3/12/2017
1.10.2	235,123	1/28/2017
1.10.1	191,158	12/4/2016
1.10.0	490,159	10/31/2016

* Fixed queueing logic for pipelining SMTP and POP3 commands. (issue #1568)
* Improve SslHandshakeException diagnostic messages. (issue #1554)
* Bumped System.Formats.Asn1 dependency to 7.0.0.
* Bumped MimeKit dependency to 4.1.0.

MailKit 4.1.0

.NETFramework 4.6.2

.NETFramework 4.7

.NETFramework 4.8

.NETStandard 2.0

.NETStandard 2.1

net6.0

NuGet packages (1.2K)

GitHub repositories (145)