On Fastmail, you should be cautious never to let your Fastmail domain addresses go (deleting them because of spam). Fastmail and a few other email providers rec

On Fastmail, you should be cautious never to let your Fastmail domain addresses go (deleting them because of spam). Fastmail and a few other email providers recycle deleted addresses within a few months. If someone else snaps up your address, they could end up getting emails intended for you. I’ve seen companies not having a coordinated system for managing such information. So just changing your address on a company’s website doesn’t necessarily mean that it’s changed in all their internal systems.