Me too! However, my fastmail app is slow on my phone (a Nokia 6.1), compared to the Gmail app which, while not buttery smooth, is still faster than Fastmail...

Me too! However, my fastmail app is slow on my phone (a Nokia 6.1), compared to the Gmail app which, while not buttery smooth, is still faster than Fastmail... And the Gmail app refuses to allow IMAP accounts to archive emails, so that's pointless...