We have a very large doubt opt list that we have been collecting from our customers over the past year, and we would like to start sending out mailers and such. What is some of the bigger message boards out there that discuss mailers and such to learn about what software to use, how to send mailers so it is not considered spam(if double optin can even be considered spam), etc.? Also if you have any good bookmarks that discuss such things, that would be great also. Thank you in advance
Bryce