This is a sample message you could use to send to a member offering or requesting intangible items:
Dear Freegle member
Freegle is a reuse group dedicated to recycling and keeping goods out of landfill, so your post is not suitable for our Offer and Wanted board.
You could put it on the chat thread, though, at https://ilovefreegle.org/newsfeed
Thank you for considering Freegle.
Link: Sample Messages