Or if you move.

The states don’t coordinate. One of the downsides to organizing presidential elections at the state level. When I was in the military, I registered to
vote in one of the states I was stationed in, as I planned to live there upon discharge. I registered, voted.

To this day, my parents continue to get my old voter mailings at their home. It never stopped. The new state doesn’t notify the old state. Fortunately, the old state doesn’t mass mail ballots.

So with mass ballot mailing, you can move, vote in your new state, and the new occupants of your previous residence will get an extra blank ballot that they can fill out and submit, should they be so inclined...

Solicited or nothing. Mass mailings are BS.

Additionally, I think we need some form of national database for voters. If you register in a new state, it should take you off the rolls at your old state.