We have several password-protected Drupal installations for use by various groups connected to our organization. We have been using the Notification module to let folks know when something new has been posted. In actual practice, these sites are used so seldom that what happens is that people receive the notification, can't remember how to log in, and end up ignoring the notice (and the content) rather than ask for help logging in (again).
We think that one solution might be to send out the notifications such that they include the login/password info encrypted, so that clicking on the link takes someone into the website, already logged in. The encrypted info would probably want to expire, say, within a week.
This doesn't seem possible with the Notification module. Is there something else that provides a similar service that we might use (some comments on the Drupal forms suggested that og also sends notifications, but it isn't clear if we can ease people's way to getting into the site).
Ideas?