tl;dr: Fastmail now lets customers choose the EU (Amsterdam) as their primary data region, in addition to its existing US locations (Philadelphia, St Louis), running on its own hardware rather than rented cloud infrastructure. Primary data lives in the chosen region, but geographic backup replicas for EU users still reside in the US, along with logs, emergency backups, and some metadata. Fastmail remains an Australian company subject to Australian law, so it explicitly notes it can't guarantee data stays solely in the EU; users can switch regions in settings at no extra cost.