1. large bags used by postal services to transport mail
2. collections of letters received by a publication, organization, or public figure
Usage: often used in media contexts

Examples

• The postal workers loaded heavy mailbags onto the delivery truck.
• Several mailbags were stolen from the post office last night.
• The newspaper’s mailbags were full of angry letters about the editorial.
• Radio hosts often read from their mailbags during the show.
• The celebrity’s assistant sorted through dozens of fan mailbags.
• Airport security inspected the mailbags before they were loaded onto the plane.