MailStore Cloud Version 25.4 now available

Mass Data Migration, Improved Archiving of IRM-Protected Messages, Improved Accessibility, and Much More

Viersen, 08.10.2025 +++ The German specialist for email archiving, MailStore by OpenText, is today launching version 25.4 of its cloud-native email archiving solution. The update for MailStore Cloud brings important new features:

• Bulk Data Migrations From MailStore Server or MailStore SPE to MailStore Cloud
  Version 25.4 of the cloud-native email archiving solution MailStore Cloud makes mass data migration easier. Signed ZIP files exported using MailStore Server or MailStore SPE are imported into MailStore Cloud. The signature transfers the archiving data of the emails so that existing retention periods for archived emails can be taken into account. In addition, after the import into MailStore Cloud, folder synchronization is performed. That means, in addition to the emails, the folder structure is also imported from MailStore Server or the MailStore SPE, and the imported emails can be found in the corresponding folders in MailStore Cloud.
• Improved Archiving of IRM-Protected Messages
  MailStore Cloud archives and indexes IRM-protected messages (Microsoft Information Rights Management). Previously, only the encrypted part of an IRM-protected message was displayed in the archive, even though the entire IRM-protected message (encrypted and unencrypted part) was archived. With version 25.4, the unencrypted part of an IRM-protected message is also visible in the archive.
• Improved Accessibility
  Several improvements have been made to the user interface to improve accessibility. These include optimized screen contrast and improved keyboard control (tab navigation).
• Improved Visibility of Permissions and Group Memberships
  Administrators can enjoy improved visibility of user rights and group memberships in MailStore Cloud V25.4, which are now displayed in a separate tab in the corresponding dialog.
• Increased Security When Logging in
  Security is a top priority at MailStore Cloud. That’s why newly created administrators and users must change their initial password when they log in for the first time.

Version 25.4 of MailStore Cloud was certified by an independent IT auditor and data privacy expert. The GDPR certificate relates to the processing of personal data, which complies with the requirements of the EU’s GDPR and the Federal Data Protection Act (DSG) in Switzerland, respectively.

Further information about MailStore Cloud V25.4 can be found in this blog post.

Information about MailStore as well as images can be downloaded here.

About MailStore

MailStore Software GmbH from Viersen near Duesseldorf, Germany, is a subsidiary of OpenText, “The Information Company” (NASDAQ: OTEX) (TSX: OTEX) and one of the world’s leading providers of email archiving solutions. Over 100,000 companies, public authorities and educational institutions in more than 100 countries have placed their trust in the products of the German specialist.
MailStore was awarded the Business Excellence Award 2023 in the category “Best Independent Email Archiving Vendor“.

Also, with its Service Provider Edition (SPE), MailStore offers a solution that is tailored to the needs of MSPs, who can provide their customers with email archiving as a managed service.

The product portfolio also includes MailStore Home, a solution that enables individual home users to archive their private emails free of charge. MailStore Home is currently used by more than 1,000,000 people worldwide.

More information