Process here: https://www.fastmail.help/hc/en-us/articles/16796454162063-Choosing-your-data-residency
Took all of 10 minutes for the migration to complete for me
Process here: https://www.fastmail.help/hc/en-us/articles/16796454162063-Choosing-your-data-residency
Took all of 10 minutes for the migration to complete for me