Franked mail is identified by the facsimile signature of the member of Congress in the upper right corner of the envelope or label, followed by “M.C.” standing for member of Congress or “U.S.S.” for U.S. Senate. The return address must include the words “Official Business.”
If mail is being sent at other than single–piece price, the appropriate mail category must be printed on the address side of the envelope underneath the member’s signature, and the eligibility standards for the mail category must be met.
Exhibit 4-1
Franked Envelope with Simplified Postal Address
