thank you @aqmiami7 I have moderation for messages for this reason, people may send a lot of spam or links with virus for example.
I had a case before where someone wanted to sell website creation to the members of my website. The person then created a profile and started sending messages to each one of them selling website and digital marketing services.
Depending on the type of marketplace that you have, some people will see it as a niche market and opportunity to sell their products to other vendors.
Will do some tests and update you for solutions. Thank you