Transvault Migration Services: Complete Email Archive Migration Delivery

Legacy email archives hold years of business records, legal evidence and regulated data. Future Matrix Tech plans and delivers complete email archive migrations using Transvault software, moving your archive to Microsoft 365 or another supported platform with an auditable record of every item.

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Why archive migrations go wrong

An email archive is not a file share. Items are stored in proprietary formats, mailboxes contain shortcuts that point back into the archive, and journal archives carry compliance obligations that ordinary mailboxes do not. Moving that data by exporting to PST files or relying on generic copy tools usually leaves gaps that surface months later, during an audit or a legal request.

• Broken shortcuts that leave users unable to open archived mail after cutover.
• Silent data loss when corrupt or unusual items are skipped without a record.
• Lost retention context when journal data and leavers’ archives are merged into the wrong place.
• No evidence that what arrived matches what left the source.

What Transvault software provides, and what we deliver

Migration scenarios we deliver

• Enterprise Vault to Microsoft 365, including mailbox archives, shortcuts and journal archives. See our Enterprise Vault to Microsoft 365 migration page.
• Other legacy archives to Microsoft 365 or Exchange. Transvault publishes support for sources including EMC SourceOne, EmailXtender, Quest/Metalogix Archive Manager, Mimecast, HP RISS/IAP, OpenText and others.
• Journal archive migration into the Microsoft 365 compliance model or another supported compliance archive. Transvault also lists Commvault as a target for journal data.
• Archive consolidation after mergers, or when several archive platforms need to become one.
• PST, NSF, EML and MSG ingestion to bring scattered files under central retention.
• Microsoft 365 as a source, for archive moves between tenants where the scenario is supported.

Platform and version support is defined by Transvault and changes over time. We confirm support for your exact source and target versions during assessment, before any commitment is made.

Our delivery lifecycle

1. Discovery. Workshops with messaging, compliance and legal stakeholders to capture drivers, deadlines and constraints.
2. Source assessment. Archive size, item counts, mailbox and journal structure, shortcut usage, storage health and known corruption.
3. Scope and licensing guidance. What to migrate, what to leave, and the Transvault and Microsoft licensing that the scope implies.
4. Solution design. Migration architecture, server sizing, network paths, throttling strategy, mapping rules and security model.
5. Proof of concept. A small representative data set migrated end to end to prove the design.
6. Pilot migration. Real users and real data, with user communication and support processes tested.
7. Production migration. Batched, scheduled and monitored, with daily progress reporting.
8. Exception handling. Every failed or flagged item is investigated, remediated where possible and documented where not.
9. Validation and reconciliation. Source and target counts compared per mailbox and per archive, with audit reports retained.
10. Cutover. Shortcut handling, user access switch and decommission planning for the legacy platform.
11. Documentation and knowledge transfer. As-built documents, audit evidence pack and handover sessions.
12. Post-migration support. A defined support window for user queries and residual items.

Data integrity, audit trail and retention

Chain of custody means being able to show, for each item, where it came from, where it went and whether it arrived unchanged. Transvault states that its software tracks items from source to destination with audit trails and integrity checks. We build the project controls around that: agreed acceptance criteria, reconciliation reports per batch, and an evidence pack your compliance or legal team can keep.

Retention is a design decision, not a default. Before migration we agree with you how source retention categories map to Microsoft Purview retention labels or policies, how leavers and inactive mailboxes are handled, and where journal data will live so that it stays immutable and searchable.

What you receive

• Assessment report and migration design document
• Pilot results and go/no-go recommendation
• Per-batch migration and reconciliation reports
• Exception register with resolution status
• As-built documentation and operations handover
• Legacy archive decommission checklist

Frequently asked questions

How long does an archive migration take?

It depends on archive size, source platform health, network capacity and target throttling. We give a timeline after the source assessment, when real extraction and ingestion rates have been measured in a proof of concept.

Can users keep working during the migration?

Yes. Migration runs in the background in batches. Users keep access to archived mail until their mailbox is cut over, and shortcut handling is planned so access is not interrupted.

Do we need to buy Transvault licences from you?

Licensing options depend on your scope and region. We explain the options during scoping so you can decide before the project starts.

What happens to items that fail to migrate?

They are logged, investigated and retried. Items that cannot be recovered because they are corrupt in the source are documented in the exception register so there is a clear record.

Do you migrate journal archives?

Yes. Journal migration needs specific design because of envelope data and compliance requirements, and we treat it as its own workstream.