I had the opportunity to perform a migration from two different Exchange Online tenants and one SMTP source tenant to a single Exchange Online tenant, including multiple mailboxes and shared mailboxes.
The UI is clean and easy to understand, the loading times are fast, and the ability to retry different errors is excellent. Review collected by and hosted on G2.com.
As Microsoft evolves rapidly on multiple security aspects, it can sometimes be difficult to determine whether an issue comes from Microsoft, my configuration, or the source/destination mailbox.
For example, I struggled a bit with 'impersonation' before discovering that this parameter will no longer be available for new tenants. Review collected by and hosted on G2.com.
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