1) App should be able to send emails with a specific frequency ,ex: 1 email per min (or we should be able to select and random time from 1 sec to 1 min
2) App should send failure delivery to a specific email
3)App should be able to specifically page with text and imagine ,and gif/flash content
4)App should be able to send emails to unlimited nr of emails that will be added manually in a specific box .
5) Client should have possibility to unsubscribe, and his email have to be moved in diff list or get notified about that .