1. marked with an official signature or stamp to indicate free postage
Usage: postal

1. past tense of frank; to mark mail with an official signature or stamp for free postage
Usage: postal

Examples

• The senator’s letter was franked with his official signature.
• All government correspondence is franked before mailing.
• She franked the envelope using her congressional privilege.
• The franked mail went through without requiring postage.
• Military personnel can send franked letters to their families.
• The official franked the documents for immediate delivery.