Web app to manage subscriptions to online magazine

Question

I'm looking for a php web app, a Wordpress plugin, or an online web service (naturally as cheap as possible) to manage the subscriptions for an online magazine. These are the main features I need:

• register/open new subscription
• renew subscription
• pay online with credit card
• send automatic emails after registration
• auto-send reminder when subscription expires
• send bulk emails to all subscribers

The magazine runs on Wordpress.

Answer 1

How about a membership plugin? There are a few. WPmember or I think wpmu has a plugin like this. I Think wpmember can do all of the things you are looking for.