I occasionally get requests from clients for assistance with sending out email marketing to their existing clients. My advice in these situations is always the same: Use A Service.
Every client that I’ve dealt with that’s interested in this kind of marketing starts out planning to do it using their regular email account, but there are good reasons not to do so. The reasons for using a service break down into three key areas: creation of your content, distribution of your content, and management of your address list. Keep reading for some notes on those.