I am going to allow customers to sign up for a subscription service where they are repeat billed for either 3/6/12 months depending on the package they choose. I have the following questions about the paypal service;

1) Does the user have to create/use a paypal account when passed to the paypal gateway?

2) Can I pass the gateway their address and name details I have already collected from my sign up form on my website so they do not have to re-enter it?

3) I noticed in the documentation it mentioned the service provider will receive an email when automatic payment is taken (3 months down the line for example).
However I need to update the database in my own website to extend their expirey date on their account if payment is made, but if only an email is sent then this would have to be done manually.

Can paypal api notify my website if recurring payment is made as well as sending the email?

Many thanks,

Alex.