Is there a way to send someone a message without requesting a sitting?

I always say that they have the option to call Rover Customer Support for help placing their dog, and give them the number to call [Edit: Rover’s contact options have changed. Visit the Rover Help Center at https://support.rover.com/ to find the phone number, help articles, or chat with the team]. Rover has lots of sitters they can call to help a dog owner, even at the last minute. We know a couple of sitters because they have used us to sit their pets. I go to their profile, copy and paste the url into a message so the client can copy and paste into their browser...and tell them to say I referred them. I also say I don't know their availability...or if I want to go the extra step I can check the sitter's calendar first for them. I wouldn't refer anyone to a sitter I don't know...leave that to Rover. Believe me, Rover will handle them for you and make you look professional.

No one can send a message without requesting a booking unless they are a past client/sitter.

This is the only forum I'm aware of so if you or anyone has policy question call Rover support, they are great.

Exactly like Craig said, direct them to search on rover or take advantage of the customer help line and talk to someone directly. And again I would only recommend a sitter you personally know or have used in the past. You don't want someone else's services tarnishing your reputation.