It was canceled after one season when Hallmark decided to change the format from a TV show to a television movie series. Signed, Sealed, Delivered (2013) preceded the TV show. The next 2-hour movie debuted in June 2015.
Disclaimer in End Credits:
"This movie departs from the U.S. Postal Service's standard operating procedure concerning the handling and absolute privacy of mail that cannot be delivered through normal mail processing channels. All characters and situations depicted in the movie are purely fictitious. Any resemblance to real events or real persons, living or dead, is purely coincidental and unintended. It is a federal crime to impersonate a United States Postal Inspector. 18 USC § 912."
"This movie departs from the U.S. Postal Service's standard operating procedure concerning the handling and absolute privacy of mail that cannot be delivered through normal mail processing channels. All characters and situations depicted in the movie are purely fictitious. Any resemblance to real events or real persons, living or dead, is purely coincidental and unintended. It is a federal crime to impersonate a United States Postal Inspector. 18 USC § 912."