Rebex Mail Pack Releases

Released: Mar 5, 2026

Updates in 7.0.9561

Fixes

  • MIME: Fixed ArgumentOutOfRangeException in MimeEntity.SetContent for empty bodies with BOM.
  • SSH: Fixed receive buffer space adjustment logic (client side).

Released: Nov 12, 2025

Updates in 7.0.9448

Features

  • Support for .NET 10 - This release adds a new set of binaries targeting .NET 10. It supports the following platforms:
    • Windows (x64, x86, ARM64).
    • Linux (x64, ARM32, ARM64).
    • Android (x64, ARM32, ARM64).
    • macOS (ARM64, x64).
    • iOS/iPadOS/tvOS (ARM64).
  • Support for Visual Studio 2026
    • All Rebex libraries are now fully supported in Microsoft Visual Studio 2026.
  • Common: Improved work with internal shared array pool.

Fixes

  • SSH: Fixed error type and message on invalid packet length in EtM cipher...

Released: Sep 16, 2025

Updates in 7.0.9391

Fixes

  • All: Various documentation improvements.
  • POP3: Pop3.Disconnect method throws exception if unable to delete messages marked for deletion.

Released: Jun 30, 2025

Updates in 7.0.9313

Features

  • Mail: Added IgnoreRedundantAsn1Data option to MailSettings/MimeOptions.
  • Cryptography: Added IgnoreRedundantData option to SignedData and EnvelopedData classes.

Fixes

  • Networking: Prevented internal NullReferenceException when socket is closed and IO operation is in progress.
  • TLS Core: Fixed obfuscated type names in debug logs.
  • TLS Core: Fixed rare race condition between TLS 1.3 IO operations and shutdown/dispose logic.
  • Cryptography: Fixed NullReferenceException instead of...

Released: Mar 18, 2025

Updates in 7.0.9209

Features

  • IMAP: Added missing UID validity check to Imap.Purge() methods.
  • IMAP: Added HasChildren/HasNoChildren properties to ImapFolder.
  • Mail: Added workaround for "multipart/signed" entities misplaced as views.
  • SSH: Added support for PKCS #1 public RSA key format to SshPublicKey.
  • SSH: Added workaround for problem with Socket.Poll in .NET 6 on Linux.

Fixes

  • MIME: Fixed behavior of MimeEntity.GetSignatureEntity() method.
  • MIME: Fixed non-persistence of original headers of detached S/MIME signature...

Released: Jan 15, 2025

Updates in 7.0.9147

Features

  • Common: Improved internal APM->TAP bridge for Socket methods on old platforms.

Fixes

  • Graph: Added missing asynchronous variants of CreateFolder/DeleteFolder methods.

Released: Dec 18, 2024

Updates in 7.0.9119

Features

  • MIME: Added MailMessage.​Settings.​TreatAdditionalMixedTextPartsAsView option.
  • TLS Core: Better exception handling when TLS 1.3 socket is disposed while negotiation is in progress.

Fixes

  • Graph: Fixed Base64 serialization of outgoing MIME messages.
  • SSH: Fixed reported error message when SSH channel is closed while a channel request is pending.

Released: Nov 12, 2024

Updates in 7.0.9083

Features

Support for Microsoft .NET 9 - This release adds a new set of binaries targeting .NET 9. They support all .NET 9 platforms:

  • Microsoft Windows (x64, x86, ARM64).
  • Linux (x64, ARM32, ARM64).
  • Android (x64, ARM32, ARM64).
  • Apple macOS (ARM64, x64).
  • Apple iOS/iPadOS/tvOS (ARM64).

Fixes

  • Graph: Added workaround for occasional "503 Service Unavailable" errors.
  • Cryptography: Added workaround for EnvelopedData with unpadded RSA EncryptedKey.
  • Cryptography: Added workaround for parsing CMS ASN.1 with...

Released: Oct 8, 2024

Updates in 7.0.9048

Features

  • Rebex Secure Mail has been renamed to Rebex Mail Pack.
  • Now includes Rebex MSG library.
  • New Graph API features:
    • Rebex Graph library now supports CreateFolder and DeleteFolder methods.
    • The new Graph.Settings.​MarkDownloadedMessageAsRead option can be enabled to mark downloaded messages as 'read'.
  • Cryptography: Added ValidationOptions.​DisableCertificateDownloads option (only supported on .NET 5 and higher).
  • Cryptography: Improved handling of wrong (negative) serial numbers in X...

Released: Jun 25, 2024

Updates in 7.0.8943

Features

  • Introduced Rebex Graph, the new .NET library for accessing Microsoft 365 (Exchange Online) using Microsoft Graph API. It makes it possible to send, receive, list and search e-mail messages. Supports TLS 1.3/1.2 and S/MIME on all supported .NET platforms including .NET Framework 3.5 on Windows 7.
  • Mail: Added support for Sensitivity header when converting between EML and MSG.
  • IMAP: ImapFolder.IsSelectable now respects \NonExistent attribute.
  • Cryptography: Added support for issuing...