MailBee.NET SMTP is a .NET software that enables users to compose and send personalized emails via various SMTP servers, including Gmail and MS Exchange. This software supports HTML mail with embedded images, proxy, NTLM, send web page, and charsets. Users can also send emails directly without an SMTP server.

This software is specifically written in 100% managed C# code, which makes it compatible with desktop, console, and ASP.NET applications that have been developed in C#, VB.NET, or any other .NET languages. Moreover, it is capable of supporting FIPS 140-2, .NET 2.0 / 3.0 / 3.5 / 4.0 / 4.5 / 4.6 / 4.7 (incl. Client Profile), .NET Core, 32 / 64 bit, Xamarin Mono, iOS, Android.
MailBee.NET SMTP comes with various features such as async/await methods, quick methods to send mail with a single line of code, mail merge over database, send a web page, read/delivery receipt, DSN, and much more. It is competent enough to make DNS MX, PTR, or TXT queries and support SMTP PIPELINING and other ESMTP extensions.
Moreover, it boasts of secure TLS/SSL connections, up to TLS 1.2, proxy (SOCKS4/SOCKS5/HTTP), S/MIME and certificates, create DomainKeys/DKIM signature, secure and user-defined ESMTP auth (incl. NTLM, GSSAPI, and POP-before-SMTP), and Integrated Windows Authentication (log in as Windows user). It also supports OAuth 2.0 (access and refresh tokens, ASP.NET MVC external login), Google Service Accounts.
MailBee.NET SMTP allows you to compose HTML mails with embedded pictures, HTML-to-PlainText conversion and vice versa, alternative body generation, powerful HTML parser and processor, international charsets, UTF-8, TO/CC/BCC, custom headers, custom message formats, iCal events, and vCard contacts.
This software is also proficient in email address parsing and validation, multiple attachments, file and memory attachments, XML and System.Net.Mail.MailMessage import/export, streams, backup SMTP and DNS servers, multi-threading, async methods, track accepted and refused recipients, forward/resend mails loaded from file, and events and error handling features, memory/file logging, debug functions, and much more.
In conclusion, MailBee.NET SMTP is an efficient tool that can boost the productivity of .NET developers. This royalty-free distribution software is easy to use and is available in the market at an affordable price.
Version 11.2: .NET Core 2.0 edition
Version 10.0:
- 'async/await' methods
- Xamarin support
- TLS 1.1/1.2 support
Version 9.0: N/A
Version 8.0: N/A
Version 6.5: N/A
Version 6.0: N/A
Version 5.9: N/A
Version 5.8: N/A
Version 5.5: N/A
Version 3.0: N/A