Module confirm

source code

Confirmation handling API that helps you get the whole confirm/pending/verify 
process correct.  It doesn't implement any handlers, but what it does do is
provide the logic for doing the following:

    * Take an email, put it in a "pending" queue, and then send out a confirm
    email with a strong random id.
    * Store the pending message ID and the random secret someplace for later
    verification.
    * Verify an incoming email against the expected ID, and get back the
    original.

You then just work this into your project's state flow, write your own
templates, and possibly write your own storage.