Learn what's new across releases, with details of features, enhancements, and resolved issues.
Aspose.Email for Java V26.6Major versionJul 19, 2026
Features
- Added ProductIdentifier field support for Contact and Appointment.
Fixes
- MapiMessageItemBase.SetProperty produces wrong property for multiple values.
- Performance regression for EML files (introduced in 23.3) in FileFormatUtil.DetectFileFormat.
- Aspose.Email recognized some regular attachments as linked resources.
- iCalendar read error.
- VCardPhotoType.PNG does not exist.
- Error moving emails between folders using Microsoft Graph.
Aspose.Email for C++ V26.6Major versionJul 1, 2026
Features
- Implemented a method for building a TGZ backup archive from EML files.
- Throttling support has been added to IGraphClient for Microsoft Graph.
- Added support for uploading large messages via Graph Upload Session in IGraphClient.
Fixes
- MSG to PDF - Throws System.FormatException.
- Null ref exception when saving VCF.
Aspose.Email for .NET V26.6Major versionJun 30, 2026
Features
- Added the ProductIdentifier field for Contacts and Appointments.
Fixes
- MapiMessageItemBase.SetProperty produces wrong property for multiple values.
- Performance regression for EML files (introduced in 23.3) in FileFormatUtil.DetectFileFormat.
- Aspose.Email recognized some regular attachments as linked resources.
- iCalendar read error.
- VCardPhotoType.PNG does not exist.
- Error moving emails between folders using Microsoft Graph.
Aspose.Email for Python via .NET V26.6Major versionJun 28, 2026
Features
- Implemented a method for building a TGZ backup archive from EML files.
- Throttling support has been added to IGraphClient for Microsoft Graph.
- Added support for uploading large messages via Graph Upload Session in IGraphClient.
Fixes
- MSG to PDF - Throws System.FormatException.
- Null ref exception when saving VCF.
Aspose.Email for Java V26.5Major versionJun 11, 2026
Features
- Implemented a method for building a TGZ backup archive from EML files.
- Implemented the handling of Throttling for Microsoft Graph in IGraphClient.
- Implementd large message upload via Graph upload session in IGraphClient.
Fixes
- MSG to PDF - Throws System.FormatException.
- Null ref exception when saving VCF.
Aspose.Email for .NET V26.5Major versionMay 31, 2026
Features
- Implemented a method for building a TGZ backup archive from EML files.
- Throttling support has been added to IGraphClient for Microsoft Graph.
- Added support for uploading large messages via Graph Upload Session in IGraphClient.
Fixes
- MSG to PDF - Throws System.FormatException.
- Null ref exception when saving VCF.
Aspose.Email for C++ V26.5Major versionMay 26, 2026
Features
- Added support for the correct creation and deletion of Calendars and Calendar List entities depending on the DataOwner field for the Google client.
Fixes
- Issue with FindAndEnumerateSoftDeletedItems(): IEnumerable iteration breaks after exception in GetFolderById().
- Unable to parse valid RULE.
- Corrupt MSG causes OutOfMemoryError.
Aspose.Email for Python via .NET V26.5Major versionMay 18, 2026
Features
- Added support for the correct creation and deletion of Calendars and Calendar List entities depending on the DataOwner field for the Google client.
Fixes
- Issue with FindAndEnumerateSoftDeletedItems(): IEnumerable iteration breaks after exception in GetFolderById().
- Unable to parse valid RULE.
- Corrupt MSG causes OutOfMemoryError.
Aspose.Email for Java V26.4Major versionMay 10, 2026
Fixes
- Exception when adding MapiContact to Deleted Items folder in PST.
- Issue with FindAndEnumerateSoftDeletedItems() - IEnumerable iteration breaks after exception in GetFolderById().
- Unable to parse valid RRULE.
- Corrupt MSG causes OutOfMemoryError.
Aspose.Email Product Family UpdateMay 1, 2026
Aspose.Email for .NET V26.4Major versionApr 30, 2026
Features
- Added support for the correct creation and deletion of Calendars and Calendar List entities depending on the DataOwner field for the Google client.
Fixes
- Exception when adding MapiContact to Deleted Items folder in PST using Aspose.Email .NET.
- Issue with FindAndEnumerateSoftDeletedItems(): IEnumerable iteration breaks after exception in GetFolderById().
- Unable to parse valid RRULE.
- Corrupt MSG causes OutOfMemoryError.
Aspose.Email for Python via .NET V26.4Major versionApr 22, 2026
Features
- Added support for X-MICROSOFT headers when loading and saving appointments in ICS format.
- Added support the 'dataOwner' field and related methods for Calendar in Aspose Google client.
Fixes
- Aspose email does not read multi-line header.
- The Subject property of the 'MapiMessage' object returns null after being set to an empty string.
- Japanese MS932 charset causes text corruption when importing RFC-822 emails to PST.
- Unicode (Chinese) attachment filenames are corrupted when sending via Graph API.
- Exception when converting ICS file to MSG format.
- MSG file properties and transport message headers change after open/save.
Aspose.Email for C++ V26.4Major versionApr 21, 2026
Features
- Added support for X-MICROSOFT headers when loading and saving appointments in ICS format.
- Added support the 'dataOwner' field and related methods for Calendar in Aspose Google client.
Fixes
- Aspose email does not read multi-line header.
- The Subject property of the 'MapiMessage' object returns null after being set to an empty string.
- Japanese MS932 charset causes text corruption when importing RFC-822 emails to PST.
- Unicode (Chinese) attachment filenames are corrupted when sending via Graph API.
- Exception when converting ICS file to MSG format.
- MSG file properties and transport message headers change after open/save.
Aspose.Email for C++ V26.2Major versionApr 10, 2026
Features
- Implemented icon operations.
Aspose.Email for Python via .NET V26.2Major versionApr 10, 2026
Features
- Implemented icon operations.
Aspose.Email for Java V26.3Major versionApr 8, 2026
Features
- Added support for X-MICROSOFT headers when loading and saving appointments in ICS format.
- Added support for 'dataOwner' field and related Calendar methods in Aspose Google client.
Fixes
- Aspose email does not read multi-line header.
- The Subject property of a 'MapiMessage' object returns null after being set to an empty string.
- Unicode (Chinese) attachment file names are corrupted when sending via Graph API.
- Exception when converting ICS file to MSG format.
- MSG file properties and transport message headers change after open/save.
- License parsing error (Invalid Character in Encoding).
- MSG file reading errors.
- Recurring calendar events with exceptions incorrectly handled when exporting/importing PST.
- Fatal 'UriFormatException' on corrupt attachment.
- Japanese MS932 charset causes text corruption when importing RFC-822 emails to PST.
Aspose.Email Product Family UpdateApr 1, 2026
Aspose.Email for .NET V26.3Major versionMar 28, 2026
Features
- Added support for X-MICROSOFT headers when loading and saving appointments in ICS format.
- Added support the 'dataOwner' field and related methods for Calendar in Aspose Google client.
Fixes
- Aspose email does not read multi-line header.
- The Subject property of the 'MapiMessage' object returns null after being set to an empty string.
- Japanese MS932 charset causes text corruption when importing RFC-822 emails to PST.
- Unicode (Chinese) attachment filenames are corrupted when sending via Graph API.
- Exception when converting ICS file to MSG format.
- MSG file properties and transport message headers change after open/save.
Aspose.Email Product Family UpdateMar 2, 2026
Aspose.Email for Java V26.1Major versionFeb 4, 2026
Features
- Added the DKIM.Verify method for MailMessage verification.
Fixes
- FindAndExtractSoftDeletedItems method not detecting deleted messages in OST files.
- MSG to EML CSS conversion of !important tag.
- FormatException - The string contains invalid characters. (fromBase64String issue).
- Aspose.Email for Java (version 25.9-jdk16) does not read multi-line header.
- Aspose.Email 25.12 fails to load license in container.
Aspose.Email Product Family UpdateFeb 3, 2026
Aspose.Email for .NET V26.1Major versionJan 31, 2026
Features
- Added asynchronous methods to Aspose Google client.
Fixes
- FindAndExtractSoftDeletedItems method not detecting deleted messages in OST files.
- MSG to EML CSS conversion of !important tag.
Aspose.Email for Python via .NET V25.12Major versionJan 26, 2026
Features
- Implemented batch update support for message read/unread flags in PST.
- Added support for saving MapiContact contacts to vCard 3.0 and vCard 4.0.
- Improved extracting Tasks from .tgz files.
- Added Aspose.Email.DKIM.Verify method for MailMessage verification.
Fixes
- ContentId no longer auto-generated for MHT AlternateViews/Attachments since 25.7.
- FormatException when decoding malformed Base64 subject header containing misplaced period in encoded-word.
Aspose.Email for C++ V25.12Major versionJan 26, 2026
Features
- Implemented batch update support for message read/unread flags in PST.
- Added support for saving MapiContact contacts to vCard 3.0 and vCard 4.0.
- Improved extracting Tasks from .tgz files.
- Added Aspose.Email.DKIM.Verify method for MailMessage verification.
Fixes
- ContentId no longer auto-generated for MHT AlternateViews/Attachments since 25.7.
- FormatException when decoding malformed Base64 subject header containing misplaced period in encoded-word.
Aspose.Email Product Family UpdateJan 6, 2026
Aspose.Email for Java V25.12Major versionJan 2, 2026
Features
- Implemented batch update support for message read/unread flags in PST.
- Added support for saving MapiContact contacts to vCard 3.0 and vCard 4.0.
- Improved extracting Tasks from .tgz files.
- S/MIME Encryption: Improved encrypting a MailMessage for multiple recipients.
Fixes
- ContentId no longer auto-generated for MHT AlternateViews/Attachments since 25.7.
- FormatException when decoding malformed Base64 subject header containing misplaced period in encoded-word.
- MSG to EML CSS conversion of !important tag.
- EWS: Error when trying to create appointment.