How to Read Any Mailer in 60 Seconds
Every mailer in your pile carries clues: how it was mailed, whose IDs are on it, and where to start your call. This guide shows you where to look.

What's inside
- The 6 marks to look forPermit, barcode, sort line, endorsement, return address and paper mark: what each tells you and what it can't prove.
- Three mailers, decodedA postcard, a window envelope and a snap pack, numbered mark by mark, each ending in who prints it, who mails it and who to call.
- A 60-second checklistOne page to keep by your desk, so any piece in your pile turns into a name and a first line.
All three pieces in the guide are fictional; every brand, permit and ID is invented.