I am integrating paypal in my site developed in ASP.net C# . I want to do paypal transaction from one paypal account to another pay pal account . admin of the site has a pay pal account and wants the customers to be able to send money directly from their(customer's) pay pal account.We have admin's paypal username/email , password and signature. Now im using the Mass Paymnet method code that i got from the PayPal site,with this code I m able to transfer money from admin's account to the customer's account but can not transfer money from customer's account to admin's account because the custome only gives the paypal username/email and password but not the signature . the code that i got requires the username/email password and also the signature of the sender. Please guide if there is an alternative that i can do to transfer within two paypal account withount having sender's signature. I am newbie and using paypal API for the first time Please help Thanks