Released: Jun 25, 2026

Updates in 8.0.9673

Features

• Graph API updates - Rebex Graph got new methods for working for working with attachments, and for updating a message. Many existing methods have been enhanced as well: messages can be deleted permanently, and subfolders can be created as well.
• Throttling support in Graph API - Rebex Graph features a new throttling support, making it easier not to overload the cloud.
• ML-KEM support in TLS - Rebex TLS library adds support for post-quantum ML-KEM key encapsulation algorithm, as part of the...

Released: Jun 1, 2026

Updates in 7.0.9649

Features

• Cryptography: Added workaround for uncommon RSA keys with very long exponents.
• Cryptography: Now checks public key during any Diffie-Hellman key exchange.
• Cryptography: Improved compatibility with Windows CNG keys.
• Cryptography: Improved private key handling in CNG interop.
• Cryptography: Now uses constant-time-compares where appropriate.
• SSH: Improved compatibility of 'SSH2 PUBLIC KEY' file loader.
• SSH: Now clears raw SSH_MSG_USERAUTH_REQUEST contents as soon as encrypted.
• SSH: Now...

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...