Successful email marketing doesn't have to be expensive or stressful. There are a LOT of do-it-yourself Email Service Providers you can make use of for an extremely reasonable price (about $15 a month) - all of which are easy to use, and can guarantee great delivery rates and list management capabilities.
Here's a rundown on 3 of my favorites so far: Constant Contact
, Vertical Response
, and MailChimp