MailStore Version 26.3: Easier Migration to the Cloud
We’d like to present version 26.3 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 Version 26.3: Easier Migration to the Cloud
This article provides an overview of MailStore Version 26.3, focusing on new features that simplify migration to the cloud and enhance email archiving capabilities across MailStore Server, Service Provider Edition (SPE), Gateway, Home, and Cloud. The update addresses operational efficiency, security, and compliance, with specific improvements for cloud-native workflows.

Key Enhancements in MailStore Server and SPE (Version 26.3)
Bulk Email Resend via Web Access
- Feature: Users can now resend up to 10 emails at once through the Web Access interface.
- Benefit: Reduces manual effort during email recovery, streamlining workflows for administrators and end-users.
IceWarp Integration Modernization
- Change: Replaced deprecated API with IceWarp’s SOAP API for user synchronization and authentication.
- Impact: Resolves compatibility issues and ensures stable, automated synchronization between MailStore and IceWarp environments.
Management API and Component Updates
- Improvements: Enhanced MailStore Server and SPE management APIs for better control and monitoring.
- Security: Updated third-party components to address vulnerabilities and improve system manageability.
MailStore Cloud: Streamlined Migration and Security

Bulk Import Capabilities
- Capacity: Expanded import space to 1 TB, supporting zipped email files from third-party systems and exports from other MailStore products.
- Automation: Automated handling of multiple ZIP/MSZIP files, eliminating manual intervention.
- MSZIP Support: Digitally signed exports from MailStore Server/SPE ensure accurate metadata transfer (e.g., archiving dates).
Secure User Registration and Password Reset
- Process: Users receive secure registration links via email, enabling self-service account activation and password setup.
- Privacy: No login credentials are shared during registration or password reset, enhancing security.
Service Admin for MSPs and Resellers
- Role: A new user type for Managed Service Providers (MSPs) and IT resellers to manage MailStore Cloud organizations.
- Features:
- No separate user license required.
- Data privacy preserved: Service Admins cannot access client archive mailbox contents.
- Activation via MailStore Business Partner Portal or BP API.
Folder Synchronization Improvements
- Granularity: Restrict folder synchronization in “multiple mailboxes” mode to specific archive mailboxes within a directory service.
- Use Case: Enables targeted deletion rules for compliance or data governance.
Compliance and Certification
All MailStore products in Version 26.3 are certified by an independent data privacy expert to meet GDPR requirements.
- Certification Scope: Ensures compliance with GDPR’s personal data processing rules when used appropriately.
- Access: Certificates available via [email protected] or the Partner Portal for registered partners.
Availability and Next Steps
Download Options
- Free Downloads: MailStore Server, SPE, Gateway, and Home are available at MailStore’s product pages.
- Trial: A 30-day free trial for MailStore Server Version 26.3 is available here.
- Cloud Partners: MailStore Cloud is distributed through certified partners. Contact [email protected] for guidance.
Upgrade Requirements
- Active Support: Users with expired MailStore Server Update & Support Service must renew to access Version 26.3.
Documentation and FAQs
- Changelogs:
- Partner Portal: Detailed FAQs for MSPs and resellers are available here.
Summary
MailStore Version 26.3 introduces critical improvements to simplify cloud migration, enhance security, and improve administrative efficiency. Key highlights include bulk email resend, automated IceWarp integration, secure user workflows, and expanded import capabilities for MailStore Cloud. For organizations prioritizing compliance and seamless cloud transitions, this release offers actionable upgrades.
Next Steps:
- Evaluate bulk import and Service Admin features for cloud migration.
- Review GDPR certification details for compliance assurance.
- Download the latest version or request a trial here.
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