I'm on Phase II of the major decluttering: trying to sell/give away online.

I posted about 7 offers on both Craigslist and also OfferUp (thanks, Teacher Terry, for mentioning that site).

I got 3 emails in succession from Craigslist, each one asking if a different item was still available, and they said "text me at XXXXXXXXXX")

I'm immediately suspicious of that one. Should I ignore, or ask him for a phone number so we can talk? His email mentioned "sent through CPlus" which is a craigslist app that streamlines buying/selling. But not sure if that alone legitimizes the sale.

I also got a message from OfferUp, simply saying "is available address please". Because of the language in that text, I'm inclined to ignore that one, too.

Are my instincts good? Any tips on being able to identify real buyers vs scammers?