Designing Emails That Actually Work (Slideshow) http://www.slideshare.net/LindsaySiovaila/mixwest-emaildesign
Will There Ever be an Email Standard? http://www.emaildesignreview.com/html-email-coding/will-there-ever-be-an-email-standard-2707/
Email Design Guide: How to Convey Your Message in Style http://mailchimp.com/resources/email-design-guide/
25 Email Design Resources to Help You Create Stunning Emails http://www.pinpointe.com/blog/email-design-resources
5 Easy Ways to Improve Your Mobile Design http://www.emailonacid.com/blog/details/C13/5_easy_ways_to_improve_your_mobile_design
How to use Images in Email Marketing http://blog.astonishemail.com/blog/2014/12/1/how-to-use-images-in-email-marketing
Email on Acid’s Boilerplate for HTML Emails http://www.emailonacid.com/blog/details/C13/html_boilerplate
The Power of Split Testing in Email Marketing http://blog.astonishemail.com/blog/2014/12/1/the-power-of-split-testing-in-email-marketing
A PDF guide to coding for Outlook http://www.emailonacid.com/images/blog_images/downloads/2014/wp_outlook.pdf
Bulletproofing images in email design http://blog.jmwhite.co.uk/2014/10/13/bulletproofing-images-in-email-design/
Responsive: Fluid content alignment http://blog.newzapp.co.uk/2014/10/essential-responsive-email-code-fluid.html
A Guide to Bulletproof Buttons in Email Design https://litmus.com/blog/a-guide-to-bulletproof-buttons-in-email-design
A crash course in the essentials of email design, coding and data http://www.exacttarget.com/products/email-marketing/email-design-toolkit