Yes, all you need to do when moving to Fastmail is update the DNS MX records for your domain so that email is routed to your Fastmail Inbox. Then all you need

Yes, all you need to do when moving to Fastmail is update the DNS MX records for your domain so that email is routed to your Fastmail Inbox. Then all you need to do is, visit to docs.google.com and login using your Google accounts credentials.