Franked Mail shows a Congress member’s signature — the frank — in the upper right hand corner of the envelope.

Reminder: Members of Congress are banned from sending Franked Mail during this year’s “blackout” period, which began Aug. 10.

The blackout begins 90 days before a general election.

Franked Mail is identified by the member’s facsimile signature — the frank — in the upper right corner of the envelope or label in place of a postage stamp. The frank includes “M.C.” (Member of Congress) or “U.S.S.” (U.S. Senate).

The Postal Bulletin has more information about Franked Mail and the blackout period.