Hi,
Since we know the process of Classified websites so To make subscription process for companies, I must know the plans you are offering along with the payment gateway. To do a Messenger, we must need either API from Wats app or FB ?
There would be free as well as subscribed classifieds from sellers. Buyers shall be able to search based upon Geographical area, required domain, price etc.. I would also like to hear more from you. Since we have fantastic development team to put their efforts and also can suggest you for the required platform based upon Technicality, Functionality and USP.
Thus, I believe we should have a meeting to discuss further.
Regards,
Mit-