PLEASE BE AWARE:
Someone is taking outgoing checks from mailboxes, "washing" them, and rewriting them for cashing. A resident had a check stolen and then cashed for a value that was a large multiple of the check they had written.
This was not the only situation in town where this happened, so do not leave checks in your mailbox. Bring them to the post office instead and mail them in person.
If you can, please look into bank services in which your bank will write and mail checks for free.