Hmm...I'm introverted and can't imagine being any other way, though it is a problem never phoning people. I think they will feel I don't care for them!
What I would like to propose sending to Mordor is the feeling one gets when one opens one's check book and instead of finding the prewritten check one expects to find, you find one you thought you sent off last Monday! That feeling is to closely followed by a second, even more unpleasant, the realization that you did indeed send a check in that envelope, but you have no way of knowing if it was made out to your church or your Insurance company! Ergh....