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How to Set Up Microsoft 365 Groups for Your Business
17 Sep, 2025
Free Tool
Migration Timeline Estimator
Estimate how long your email migration to Microsoft 365 will take based on mailbox count, data volume, connection speed, and migration complexity.
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Your upload speed in Megabits per second
Typical Migration Timelines by Platform & Size
| Source Platform | 1–25 Mailboxes | 25–100 Mailboxes | 100–500 Mailboxes |
|---|---|---|---|
| On-Premise Exchange | 1–2 weeks | 2–4 weeks | 4–8 weeks |
| Hosted Exchange | 1 week | 1–3 weeks | 3–6 weeks |
| Google Workspace | 1–2 weeks | 2–5 weeks | 5–10 weeks |
| IMAP Provider | 1–3 weeks | 3–6 weeks | 6–12 weeks |
| POP3 Provider | 2–4 weeks | 4–8 weeks | 8–16 weeks |
Timelines include planning, testing, migration, and post-migration support phases. Actual timelines vary based on data volume, internet speed, and complexity. View full Cloud Email details
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