Only eight states have automatic mail-in voting: California, Colorado, Hawaii, Nevada, Oregon, Utah, Vermont, and Washington state, plus Washington DC.
Some states have No Excuse Required mail-in options, while others have Excuse Required mail-in options. I’ve lived in all three types of states. The automatic (blue) state was best, and No Excuse (purple) state made the mail-in request easy, but I had to jump through hoops and lie my ass off to mail my ballot in the Excuse Required (red) state.
Every state should have automatic or No Excuse mail-in ballots.