Unsolicited Post, E.g. Flyers, Leaflets
Puzzle 6 of All Things Ice Cream Easy Pack
Question is: Unsolicited Post, E.g. Flyers, Leaflets
and the answer is: JUNKMAIL
Word Meaning:
JUNK MAIL — (postal) Any mail or letters that are not welcome or solicited and typically sent in bulk; especially mail of a commercial nature such as advertising circulars and form letters.
Definitions from Wiktionary.