Thank you for your inquiry. We are very sorry for the delay in response.
– ability to silent post to payPal Payments Pro (user never leaves the site)
This is already handled for you with s2Member Pro + PayPal Pro for all credit card transactions. If a User checks out with a PayPal account, they will be redirected to PayPal to input their data, even with PayPal Pro.
– ability to initiate a subscription/recurring payment schedule **in payPal** with this transaction
s2Member Pro fully supports Recurring Payments with PayPal, and this is all stored within PayPal. s2Member does not store any billing information on-site.
– I know this plugin has on-site user management features, but would it allow the customer/visitor the ability to update their subscription directly from within the W.P. interface? E.G., customer logs in to the WordPress site and can cancel or renew their subscription (also via silent post to Payments Pro)
Yes. s2Member’s integration with PayPal Pro includes a Cancellation button, and Billing Modification Forms that keep your Users on your site at all times. This is not true with ClickBank or Google Checkout, however, as it is simply not possible with those payment gateways.
See: Dashboard -› s2Member® -› PayPal® Pro Forms -› Billing Cancellation Forms
See Also: Dashboard -› s2Member® -› PayPal® Pro Forms -› Billing Modification Forms