You could use Thunderbird, but it’s slow for large mailboxes and multiple accounts. Being cloud-based, Migrate Wizard moves email faster, tracks progress, retries on errors, and supports incremental syncs - all without running a client locally.
does it matter how long it takes if you're going to do it once?
last month I moved 20 years of email
I started offlineimap before I went to bed and it finished before I woke up
does it matter how long it takes if you're going to do it once?
last month I moved 20 years of email
I started offlineimap before I went to bed and it finished before I woke up