PowerTCP Mail for .NET Releases

Released: Dec 16, 2020

Updates in V4.3.12.2


  • Fixed a minor compatibility issue so that Dart.Mail.Standard.dll can be used with .NET 5.0.

Released: Apr 7, 2020

Updates in V4.3.11.0


  • Compatibility improvement, added support to decode single digit day of month on date time values store in content-disposition.
  • Compatibility improvement, added an additional SecureEncrypt overload to MailMessage to allow the SubjectIdentifierType to be specified which can improve SMIME compatibility with mail clients. For example using AES encryption with Mozilla Thunderbird requires that SubjectIdentifierType.SubjectIdentifierKey to be used.


  • Fixed an issue where Base64 encoded...

Released: May 8, 2019

Updates in V4.3.9.4


  • Refactored header parsing resulting in better handling of unorthodox headers and header parameters.
  • Added a property for setting the Authorization Identity when using Imap's PLAIN authentication mechanism.


  • Resolved various parsing issues related to RFC822 message parts and RFC822 message part attachments.

Released: Sep 24, 2018

Updates in V4.3.8.1


  • Various improvements made in handling malformed mail messages and message headers.

Released: Aug 2, 2018

Updates in V4.3.7.1


  • An issue where RFC822 parts may not be decoded correctly when their encoding type is Quoted-Printable has been fixed.

Released: Apr 4, 2018

Updates in V4.3.6.2


  • Added support for .NET Standard 2.0 and .NET Core 2.0.
  • New .NET Core 2.0 sample projects, referencing the Dart.Mail.Standard dll.
  • Updated trial license operation for use on .NET Standard-compatible platforms.


  • Resolved an issue where some attachment filenames were not properly decoded.
  • Resolved an issue where the component would use the systems native end of line sequence instead of CRLF.
  • Resolved an issue where in line links to web resources in HTML emails could cause an exception...

Released: Mar 8, 2017

Updates in V4.3.5.0


  • Adds support for Visual Studio 2017.

Released: Feb 1, 2017

Updates in V4.3.4


  • An issue where spaces were incorrectly removed when only a portion of header text was Q-encoded was resolved.
  • An issue where attachments names were not parsed out correctly when the attachment part headers contained both a name and filename parameter has been resolved.
  • Some servers do not support the receipt of the EHLO command after authentication. EHLO will no longer be sent after authentication has occurred.
  • An issue where FETCH responses containing parentheses within quoted strings...

Released: Jul 19, 2016

Updates in V4.3.3


  • An issue that could result in a null reference exception being thrown while retrieving email headers from a POP server was resolved.

Released: Jun 1, 2016

Updates in this release

Updates in 4.3.2

  • Mailbox heirarchy delimiters that are an escaped qouted string character (ex: "\\") will now be decoded and parsed correctly.