Start with the mailbox list.
We establish the source provider, mailbox sizes, users, aliases and access available. We also check your Microsoft 365 organisation account, domain ownership and licences needed for the destination. Those details shape the migration quote.
Agree what needs moving.
IMAP migration moves email; contacts, calendars, tasks and other non-mail items need separate handling. Local archives, shared mailboxes, forwarding and delegated access are checked individually. We put the agreed scope in writing.
Plan the change for the business.
We agree preparation, the migration approach, domain email routing changes, timing and communication with the people using the mailboxes. Devices and Outlook profiles may need configuration. The plan states who carries out those changes and how the switch is checked.
Check the handover.
We agree checks for mail delivery, sending, user access and any separately scoped items. The old service’s retention and closure are decided with you after the migration checks. Microsoft licences and ongoing administration are separate cost and responsibility questions.