Email design and strategy studio Action Rocket’s very useful collection of links to articles on design, HTML and creative concepts for email drawn from their own work and other pros in the field
The Content Marketing Institute’s weekly newsletter provides a summary their content marketing blog articles and news, as well as exclusive content by content marketing thought leader Joe Pulizzi.
Breadth First Growth is a weekly email with projects across computer science. Each project is designed to be completed in 2 hours or less and serve as a starting point for further learning.