My company is about to perform its first e-mail blast to announce the rollout of our completely redesigned website. We are targeting all existing customers with an email address in our database. I am looking for an easy to use, low-cost software solution. Nothing fancy...we have a list of 4,000 email addresses sitting in an Excel spreadsheet and we just want to send a canned email to every address on that list without getting spam blocked. That's it.