If an IMM is under the 'Active' status on the Wizlist it isn't needy for a follower who has taken the time to write a role/desc and is waiting on empowerment to reach out if the IMM is clearly not active and should be dormant.

With Destuvius I usually have no trouble emailing and getting a response, dude checks his email. If he doesn't respond to your email he is ignoring you.