Don't use this post office!!!!! They lose things...repeatedly. The most recent one was a box of replacement parts I ordered. This package required signature confirmation so I got a delivery attempt notice at my door. A couple of days later when I went to claim my package- they couldn't find it! Sadly this is not the first time. I have dropped packages (with tracking) off- only for them to never leave the post office and mysteriously disappear. Unfortunately, this is also that post office that delivers to my house. Two Amazon packages tracked as delivered to my house were never received. I had to call the post office and get the run around before being able to speak to my post delivery guy who swears he left them in my mail box... a locked mail box.
If I were you, I would use a different post office if you wish to mail with confidence.