MailBee.NET POP3 Releases

Released: Oct 19, 2021

Updates in v12.3.x


Updated Oct 19, 2021


  • Added TLS 1.3 support.
  • Improved DKIM signing - relaxed requirements on private key file format and better error handling.
  • HMTL to plain-text conversion can now tolerate chars with invalid char codes.
  • Improved documentation (mostly regarding "Office 365 via OAuth 2.0" topics).


  • Misc. bug fixes.

Released: Sep 14, 2020

Updates in v12.2.x


Updated Sep 14, 2020


  • Adds Microsoft Office 365 OAuth 2.0 support (developer guides and samples available for desktop and Microsoft ASP.NET Core apps).
  • Improves Microsoft Outlook MSG conversion.
  • Improves S/MIME verification of attached signatures.
  • Improves ESMTP CRAM-MD5 authentication.
  • Improves documentation.

Released: Oct 29, 2019

Updates in v12.1.x


Updated Dec 2, 2019


  • DNS MX lookup mechanism can read UDP packets of the maximum size.
  • Bounce database improvements.


  • S/MIME verification fix with attached signatures.
  • LINK HREF now honored when saving HTML content with embedded images (embedded CSS styles are now saved as well).


Updated Oct 29, 2019


  • A set of S/MIME methods for encryption/decryption, signature verification, working with certificates in Windows-independent way (can be used in UWP and other non...

Released: Jul 23, 2019

Updates in v12.0

Updates in v12.0

  • .NET Core 2.0 / .NET Standard 2.0 edition revised and improved, including better support of .NET Core 2.1 and 2.2.
  • .NET Standard 2.0 support in UWP. UWP apps targeting Windows 10 Fall Creators Update and newer can use the fully-functional .NET Standard 2.0 edition of MailBee.NET Objects. Special UWP edition of MailBee.NET Objects which can work with older UWP platform is still there as well.
  • .NET Core 2.0 sample projects and tutorials added (UWP, console and ASP.NET Core). They...

Released: Oct 23, 2017

Updates in v11.2


  • Brings features previously available only in classic .NET Framework 4.5 edition, to .NET Core 2.0, including:
    • BounceMail component (parser of bounced e-mails).
    • Verification of e-mail addresses in bulk mode.
    • Mail merge over database.
  • UWP edition can now be used in Release builds.
  • Protected constructors for exception classes (required to make exception serialization work properly).


  • Miscellaneous bug fixes and improvements (mostly, to Outlook .MSG parser and builder).

Released: Jun 6, 2017

Updates in v11.1


  • Better support of certificates in .NET Core and Xamarin. Can now use client certificates in SSL/TLS connections and DKIM.

Released: Mar 14, 2017

Updates in v11.0


  • .NET Core 1.0/1.1, .NET Standard 1.3+, ASP.NET Core support.
  • UWP (Universal Windows, UAP 10.0) support.
  • .NET 3.5 and .NET 4.0 builds (in addition to .NET 2.0 and .NET 4.5).
  • SHA256 signatures of all DLLs (in addition to SHA1).
  • IDN domains (e-mail addresses with international addresses).
  • TlsAuto mode to automatically select TLS 1.2 if possible and fall back to TLS 1.1 or 1.0 if not.
  • SocketCreating event to control how socket objects are created.
  • MailMessage.Sender property.
  • MailMessage...

Released: Nov 27, 2013

Updates in this release

Updates in 8

  • Email Address Validator Component - Check email addresses for syntax and validity.
  • Support for mail merge over System.Data.IDataReader.
  • Support for OAuth v2.0 including Gmail's XOAUTH2 extension.
  • Improved IPv6 compatibility.
  • Improved support for Outlook .MSG and .PST conversions.
  • Improved MIME parser and builder, including support for international characters and quoted strings in headers.

Released: Jan 15, 2013

Updates in this release

Updates in 7.3

  • Windows 8 compatible installer.
  • New options for checking SSL certificates
  • .NET Framework 4.0/4.5 compatibility enhancements.
  • MIME parser fixes.

Released: Nov 8, 2011

Updates in this release

Updates in 7.0.1

  • New PDF Converter component allows HTML to PDF conversion.
  • MailBee.NET.dll is now natively compiled for .NET 4.0 (.NET 1.1 and .NET Compact deprecated, .NET 2.0/3.5 is still fully supported).
  • New Certificate.SubjectAlternativeName property.
  • Includes numerous improvements and fixes to Outlook .MSG and .PST conversion, MIME parser and builder.