There are a ton of Email list management providers whom will help you to manager and market too your mailing list:

icontact.com will help to simplify your communication. They will help you track emails, and give you data on how many people opened your email and clicked onto your links.

mailing list manager pro will help you create and manage highly targeted mailing lists and campaigns. Most of the features they offer were suggested by their existing clients.

constantcontact.com will help you connect, inform, and grow your mailing list.

verticalresponse.com will help you build, target, and track email marketing newsletters. They can actually also help you with online surveys as well.