The situation
A manufacturer was running twenty staff on mailboxes from an ISP that had stopped caring somewhere around 2015. Mail went missing. Quotes landed in customers’ spam folders. Nobody could say where the backups were because there weren’t any.
What we did
We planned the move like a production job, because that’s what their business understands. Every mailbox was staged into Microsoft 365 ahead of time, the DNS switch happened on a Friday night, and the deliverability plumbing — SPF, DKIM, DMARC — was configured properly before the first Monday email went out.
Multi-factor authentication rolled out the following week, one department at a time, with a one-page guide written for humans rather than IT people.
The outcome
Monday morning, staff opened Outlook and found everything where they left it — which is the entire point. The measurable change came later: customers started replying to quotes they previously never saw, because the quotes were finally arriving.