We have the option to use USPS, or drop-box at the nearby community center (the option I choose).

[QueerDuck]

I also get an email letting me know that the ballot has been accepted, and a later email confirmation letting me know it's been counted. We could also drop off our ballot at a polling place on/before election day, or at the board of elections office (which in my case is much too far to drive.) In the past, I've voted by mailing my ballot in a streetside blue USPS mail collection box, and by popping it into the slot inside the post office building. But NEVER would I trust it to be left unattended in my own streetside mailbox with the red-flag up.