[sr2]

Just make sure your catchall is renewed well into the next five years. Heck, you can do a 'rollover renewal' that lasts 10 years if you wanted.

This is to stop somebody eventually gaining control of the domain when it expires, setting up a catchall on it, and then being able to login to every single account you used with that address.

Some registrars protect a domain after expiration so nobody can hijack it and claim it as their own, but you often have to pay extra for this service.