The topic of this category is marketing websites, services, and products via email addresses.
Regular Blogs
Chimpmail Email Marketing Blog
Gives advice about email marketing, including goal tracking, experimenting with MailChimp's quarterly newsletter, and various email providers' authentication policies and how they might affect the readers' email marketing.
http://blog.mailchimp.com
Combining email marketing with social media is what this company, which created software to do the tasks required for successful email marketing. Other topics include event marketing, choosing a domain name for the blog, and the advantages of having repeat customers versus new ones.
https://blogs.constantcontact.com
The Email Marketing Chronicles
Scott Hardigree's blog talked about email marketing and issues such as email list rental and working with consultants.
http://blog.indiemark.com
