1. Stop the mail at https://holdmail.usps.com/holdmail/
2. Stop the newspaper (if you get it)
3. Mention to a trusted neighbor that you'll be gone and ask them to check on your place. Ask them to remove mail or papers if efforts 1 & 2 fail.
4. Don't leave your trash bin out and expect to pick it up when you get back.
5. See if someone with keys to your place will be around in the area, just in case your alarm goes off.