Enclosures are acceptable as long as they’re securely wrapped to prevent:

  • Loss or damage to the items
  • Damage to postal equipment or other mail
  • Injury to people handling the items

You may enclose a Business Reply Mail™ item in Lettermail™, if you’ve signed the appropriate Agreement with us.

Repositionable Notes (RPNs) is an option that allows you to affix an adhesive note to the outside of a Lettermail item (excluding polybags).