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I need to sell a weekly subscriber-based email on my bespoke PHP/MySQL website.
With a click of a button, I want to allow users to purchase/subscribe via my PayPal Premium Account to have access to a MailChimp mailing list with weekly recurring payments.
I want something very simple and elegant, probably using PayPal's IPN to push subscriber's details to a MailChimp list. It is important that at this time the 'import' time and date is treated as the 'sign-up' time and date in order to start the double opt-in process.
Also, needs functions to handle if a user decides to cancel the PayPal subscription, then the address comes off the active MailChimp list and stays on the inactive. Likewise when a user removes themselves from MailChimp, we need their PayPal subscription stopped as well.
Using server scripts can be a solution if required but I'm really after something elegant and simple without registration through my website.