Retail Email Blog – I’ve been following this site ever since it had a Blogspot URL. Chad White authors the blog, and is subscribed to the top 100 online retailers based on the Internet Retailer 500. He gives a lot of interesting insights regarding what everyone is doing right, wrong, and everything else experimental. I have just one quip though, our company is in the top 100, but yet I don’t see us on his list.

Spam Meltdown – One of the few sites that focus on the creative side of Email Marketing, this site has failed to update its content in recent months. However, what they have archived now can be a good point of comparison for any up and coming Email Marketing program.

Email Insider on Media Post – This is a substantial source for up to date Email Marketing developments. Most of the articles are opinion based, which is good if you’re looking for new perspective every now and then.

The Email Wars – The blog is maintained by EROI, an email marketing agency. Also a good source of white papers.

I am also refer to the following sites:

Advertising Age – When you’re trying to get a feel for how consumers and advertisers think in the US, no other site can give you a better overview. To us Internet Marketers, it’s encouraging to see that they’ve been covering more non traditional media topics lately.

Trend Hunter – For similar reasons, Trend Hunter can help any media/advertising/marketing team anticipate and prepare for any market changing consumer behavior. This especially works for more traditional forms of media such as magazines (because of the usual 1-2 month production lead time).

Hope this helps!