I'm looking for a plugin for several school website's that meet's the following criteria:
Visitors can subscribe via email to be sent an email from the site containing uploaded pdf newsletters as attachments to that email.
They must have the option of being able to subscribe to one or more of several subscribe lists (e.g. whole of school communications, year based communications and class based comms.).
This would not involve anything to do with blog post subscriptions, but receiving emails with pdf attachments, to cut down on school paper usage.
Appreciate any suggestions, commercial or free.