MailStore Version 26.2: MailStore With a New Design, Migration to Graph, and Expanded Archiving Options

We’d like to present version 26.2 of our email archiving software MailStore Server, the MailStore Service Provider Edition (SPE), MailStore Gateway, MailStore Home and MailStore Cloud, which is now available.

MailStore in a New Look

MailStore is getting a modern visual refresh – bringing it in line with OpenText’s brand identity and creating a more cohesive, contemporary experience. As part of OpenText for several years, MailStore’s new design now makes this connection instantly recognizable.

What this means for you: While the look is new, everything else stays the same. Your solution, your data, and your daily workflows remain exactly as you know them. You’ll notice that our logo and our corporate colors have changed. You can find more details about this on our blog.

New Features in MailStore Version 26.2

New Conversion Tool for EWS to Microsoft Graph and IMAP

With Release 26.2, MailStore is introducing a new conversion tool for MailStore Server and the MailStore Service Provider Edition (SPE), designed specifically for Microsoft 365 users. It provides all the features customers need for a smooth migration from Exchange Web Services (EWS) to the Microsoft Graph API.

The release supports administrators with automatic detection of existing EWS profiles, clear guidance on necessary adjustments, and a guided migration via the new profile conversion tool. This significantly simplifies the transition, reduces potential sources of error, and minimizes manual effort. Be sure to check out our blog posts (here and here) to learn more about the changes Microsoft plans to make to the EWS.

Exports to Microsoft 365 Now Using IMAP protocol

MailStore customers know and appreciate the export feature, as it allows you to restore archives and folders to a mailbox on the mail server.

With this update, exports now use the IMAP protocol instead of EWS to ensure continued compatibility with Microsoft 365 (Exchange Online) and for preserving the folder structure of mailboxes. Existing profiles can be converted using the new conversion tool, while all new profiles will use IMAP by default.

Automatic Synchronization of Microsoft 365 Groups

In MailStore Server and the MailStore Service Provider Edition (SPE), Microsoft 365 groups can now be synchronized automatically. For each synchronized Microsoft 365 group, MailStore creates one new MailStore user and one archive where journaled emails will be dropped. Note: Each synchronized Microsoft 365 group requires one user license.

This feature significantly simplifies archiving and management and ensures that content from Microsoft 365 Groups is available in the archive in its entirety.

Some Minor but Useful Improvements

In addition, we have several minor improvements to enhance the software’s security, stability, and reliability. These changes include bug fixes and technical optimizations running in the background. One example of this is the targeted improvements made to the MailStore SPE management console, which contribute to a more stable user experience.

New Features in MailStore Cloud Version 26.2

Support for Outlook.com Free Email Accounts

You can now archive emails and synchronize folders from Outlook.com accounts, too. In addition to Microsoft 365 business and enterprise accounts, free Microsoft email services (i.e. domains “@outlook.com”, “@hotmail.com”, “@live.com”) are also supported. Customers can aggregate all their emails from various services in one MailStore archive.

Deleting Archive Mailboxes That Contain Emails

Archive mailboxes can now be deleted even if they still contain emails. Compliance users can choose to delete or preserve emails in such archive mailboxes. Previously, deletion was only possible for empty archive mailboxes. This change improves the manageability of your MailStore archive and provides more flexibility for admins and compliance users. Any deletion of emails is fully audited, supporting continued GoBD and GDPR compliance.

Further Improvements and Bug Fixes

We have also made several minor improvements and bug fixes that enhance the user experience. Among other things, the process log can show readable names instead of IDs, users can now see at a glance whether they log in to Web Access or Admin Access, and others.

Updated Certification: Meeting Data Privacy Requirements

As usual, we have had the new version 26.2 of all MailStore products certified by an independent data privacy expert.

The certification takes into account all relevant aspects of the European General Data Protection Regulation (GDPR) and affirms that, when used appropriately, all the requirements governing the processing of personal data set out in the GDPR are met.

You can request a copy of the official GDPR audit certificate as soon as it is available from [email protected].

Registered MailStore partners can download the certificates from our Partner Portal as soon as it is available or request it by email from [email protected].

Availability & FAQs

You can download the new version of MailStore Server, the MailStore Service Provider Edition, MailStore Gateway and MailStore Home free of charge from our website.

If your MailStore Server Update & Support Service has expired, please contact us to purchase an upgrade that will allow you to use the latest version of MailStore Server. Read here to find out about other good reasons for having an active Update & Support Service in place.

Interested companies can also download MailStore Server Version 26.2 as part of a free, 30-day trial. If you are an MSP and are interested in offering email archiving as a service based on the MailStore SPE, please contact our sales team at [email protected]. Alternatively, you can sign up as an authorized MailStore Partner with us right now for free.

MailStore Cloud is available at dedicated MailStore Partners. Please contact us for advice. You can find a detailed list of FAQs in our Partner Portal.

Click Here for the Corresponding Changelogs

• MailStore Server: https://www.mailstore.com/en/products/mailstore-server/changelog/
• MailStore SPE: https://www.mailstore.com/en/products/mailstore-spe/changelog/
• MailStore Gateway: https://www.mailstore.com/en/products/mailstore-gateway/changelog/ 
• MailStore Home: https://www.mailstore.com/en/products/mailstore-home/changelog/
• MailStore Cloud: https://www.mailstore.com/en/products/mailstore-cloud/changelog/

Useful, Further Links

• Product page MailStore Server: https://www.mailstore.com/en/products/mailstore-server/
• Product page MailStore SPE: https://www.mailstore.com/en/products/mailstore-spe/
• Product page MailStore Home: https://www.mailstore.com/en/products/mailstore-home/
• Product page MailStore Gateway: https://www.mailstore.com/en/products/mailstore-gateway/
• Product page MailStore Cloud: https://www.mailstore.com/en/products/mailstore-cloud/

Detailed information on recent versions can be found here:

• MailStore Version 26.1: Neue Archivierungsprofile mit Microsoft Graph und verbesserte Compliance Features
• MailStore Cloud Version 26.1: Weiterleitung archivierter E-Mails und verbesserte Postfacharchivierung
• MailStore Version 25.4: Support For Microsoft Exchange Server SE and Improved Compliance Features
• MailStore Cloud Version 25.4: Mass Data Migration, Improved Accessibility, and Much More
• MailStore Version 25.3: Indexing of E-invoices and OAuth2 for SMTP Connection to Microsoft 365
• MailStore Version 25.2: Support for OAuth Authentication for Outlook.com and Email Archiving for NoSpamProxy Users
• MailStore Version 25.1: Increased Security and Support for Microsoft Server 2025 and Microsoft Outlook 2024