MailStore Client
MailStore Software GmbH (OpenText) · current 26.3
The current version of MailStore Client is 26.3 (as of 08/07/2026). patchletter checks the official source daily and emails you new releases.
MailStore Client at a glance
MailStore Client is the Windows application users and administrators use to work with a MailStore Server email archive: searching, viewing and exporting messages and, with the right permissions, managing archiving profiles, jobs and users. In environments with retention obligations it is the usual way to reach the archive independently of the mail client.
The client is kept in lockstep with the server: the vendor publishes major and interim builds together for Server, Client, Outlook add-in, Gateway and the Service Provider Edition, with maintenance builds carrying bug fixes in between. New builds are announced through the vendor blog and the changelogs.
Order matters when updating: the server first, then the workstations. If the client version diverges from the server version, connecting can fail, which makes a planned rollout through software distribution worthwhile. The Outlook add-in follows the same version line and should be updated alongside it, and a verified backup of the archive and its configuration belongs in every update plan.
Version history & changelog · as detected by patchletter
| Version | Channel | Date | Notes |
|---|---|---|---|
| 26.3 | STABLE | 08/07/2026 | Release notes → |
| 26.2 | STABLE | 29/04/2026 | Release notes → |
Frequently asked questions
- What is the latest version of MailStore Client?
- MailStore Client 26.3, released 08/07/2026. patchletter checks the vendor's official source daily for new releases.
- Where can I find the MailStore Client release notes?
- The version history above links to the vendor's official release notes where the vendor publishes them. patchletter deliberately stores no vendor full texts.
- How do I get notified about new MailStore Client updates?
- Tick MailStore Client off in the catalogue and leave your address. From then on new versions go out by email — one at a time, or bundled in the daily or weekly digest.
An email as soon as a new MailStore Client version ships
We reconcile the vendor source daily. When a new version appears, it lands in your inbox right away or bundled as a digest. The update email is free and ends with one click. Alerts about vulnerabilities and end of support are part of patchletter Pro.
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