Email Migration Software: Moving Mail Without Losing the Record
Migration is copy-with-verification, not a product category. IMAP/POP collection, PST ingest, and dual-run MX cutovers—plus where Hexamail’s downloader and archive fit.
Most “migration software” searches are collectors
BitTitan/MigrationWiz-class tools exist for tenant-to-tenant Microsoft moves. SMB “email migration software” is often: copy IMAP, ingest PST, or fetch ISP POP into a new server. That last one is POP3 Downloader.
If the destination is an archive, you are not migrating users — you are capturing a record (Vault). If the destination is a new Windows MX, see on-premise email server.
A cutover that does not lose a day of mail
- Dual-run: journal/collect into the new system while the old MX still works.
- IMAP or PST copy of history.
- Count messages, not gigabytes.
- Switch MX / profiles.
- Keep the old system read-only until counts match.
Gmail fetch dying is a special case of this: Gmail POP3 alternative.
Where Hexamail sits
Downloader = ongoing collection and ISP POP/IMAP. Vault = historical PST/SMTP archive. Server = the new mailbox home. None of them is MigrationWiz. Use the expensive suite when both sides are giant Microsoft tenants; use these when the awkward side is a legacy mailbox or an on-prem destination.