This is a series of blogs on how small churches can use technology to help their ministries.
I just found out about a site called mailchimp.com. Like Constant Contact they allow you to create and send professional emails. You will be able to use a number of third party applications as well as track your email campaigns from your iphone.
It's worth checking out, especially if your email list is smaller than 500. Then it's free.
Go to mailchimp.com