title: Which API I should use for Paypal when I have many receivers and payers
body: <p>I am building a project that might be a bit complicated and I have to use paypal for this.</p>
  
  <p>There are many users in the app and they can be receivers, payers or both. The receivers/sellers provide certain services and the payers have to pay their sellers monthly. So if the user agrees to pay, the paypal will charge him monthly and automatically. The users need to register as paypal member and get authorized from paypal beforehand so I can use their emails for the transactions in the app.</p>
  
  <p>I am thinking of using paypal express checkout with recurring apis, but I am not sure if it is the right decision and no clue if it is working. Any suggestions? thanks.</p>