Microsoft 365 email migration for businesses
Moving from hosting email or a legacy system starts with an inventory of mailboxes, domains and devices. NBG TEAM plans the migration, transfers the agreed content and checks mail flow and user access after the switch.
Request a migration plan
When a planned migration is useful
If business email is spread across webmail, old Outlook profiles and local archives, changing providers can reveal that some messages were never stored on the server. We first establish where the data is and what must remain accessible after migration. The service is for businesses moving to Exchange Online with clear ownership of their domain and user accounts.
For offices in Belgrade and New Belgrade, we agree remote preparation and on-site work where computers need attention. If you already use Microsoft 365 and email has stopped working, start with Outlook and business email troubleshooting.
What we review before the move
- Users, aliases, shared mailboxes and distribution groups.
- Licences, administrator access and control of DNS records.
- Mailbox sizes, local archives, calendars and contacts.
- A transfer method supported by the source system and available access.
- The switch-over window and a fallback procedure if checks fail.
An IMAP email migration does not automatically transfer calendars, contacts or mailbox rules. We inventory those separately. Local PST files, older computers and applications that send email can extend the scope.
How the migration works
Pilot mailbox and user preparation
We test the chosen method on an agreed sample. Required accounts and licences are prepared before mail is redirected. Users need to know when their sign-in changes and how to report a problem.
Mail routing and final checks
DNS changes are made in the agreed window, followed by mail-flow and client checks. DNS propagation and larger archive transfers can take time, so the schedule and possible interruption are assessed after reviewing the environment.
What we check at handover
We agree inbound and outbound test messages, access to selected folders, shared mailboxes and calendars. Devices and applications that send email are checked when included in scope. Your business receives a record of completed checks, exceptions and responsibility for ongoing administration.
The old service is not closed simply because a new login works. Retirement follows transfer verification and an agreed retention plan. See our SPF, DKIM and DMARC guide for domain authentication considerations.
What determines the proposal
Mailbox count, data volume, the source system, access and the number of devices affect cost and timing. Microsoft licences and any additional migration tools are identified separately. Send an initial inventory so we can define the work and schedule. Migration can be coordinated with MFA setup for the new sign-ins.
For the wider service, see software and microsoft 365 support. Our IT services pricing page explains billing; the scope of this project is confirmed in a proposal.