With proper mail voting you have a way to verify that your mailed in vote is counted.
(AI generated explanation) How the double-envelope system works
Inner “secrecy” envelope
You mark your ballot, fold it, and slip it into an unmarked inner envelope. No name or identifying info is on this envelope, so your choices stay anonymous. Outer declaration envelope
The inner envelope goes inside a larger outer envelope that carries: – A ballot ID/barcode unique to you. – A signature line that must match the one on file with your election office. In many states, a detachable privacy flap or perforated strip hides the signature until election officials open the outer envelope, keeping the ballot secret.