Email Design Guide from MailChimp

http://mailchimp.com/resources/email-design-guide

Copywriting Tricks Every Email Marketer Should Know

http://emailcritic.com/2016/04/copywriting-tricks-every-email-marketer-should-know/

The 6 Best Practices for Responsive HTML Email Design

https://mailbakery.com/blog/the-6-best-practices-for-responsive-html-email-design/

Email copy from great companies

http://www.goodemailcopy.com/

Improve Email Marketing Using Principles of UX Design

http://isenselabs.com/posts/how-to-improve-email-marketing-using-principles-of-ux-design

How to Write Emails That Sell

https://litmus.com/blog/how-to-write-emails-that-sell

Troubleshooting Line Length in HTML Email

https://www.emailonacid.com/blog/article/email-development/line-length-in-html-email/

Email Newsletter Design Fails To Avoid

https://creativemarket.com/blog/2016/02/03/email-newsletter-design-fails-to-avoid

Tips for Designing an Awesome Welcome Email

http://www.3dcart.com/blog/12-tips-for-designing-an-awesome-welcome-email/

UX in Email Design

http://www.webdesignerdepot.com/2016/01/ux-in-email-design/

Use the inverted pyramid model to create effective email newsletters

https://www.campaignmonitor.com/blog/email-marketing/2016/01/how-to-use-pyramid-model-create-effective-email-newsletter/

Millennials Prefer Email, But Only If You Do It Right

http://emailcritic.com/2015/09/millennials-prefer-email-but-only-if-you-do-it-right/

Holiday email trends, dates, and tips

https://www.campaignmonitor.com/blog/email-marketing/2015/10/holiday-email-marketing-trends-dates-and-tips/

24 awesome Black Friday ideas

https://www.campaignmonitor.com/blog/email-marketing/2015/10/24-awesome-black-friday-marketing-campaigns/

How Emails Are Evolving into Mailable Microsites

http://www.convinceandconvert.com/email/evolution-of-email/

Email marketing in the era of 8-second attention spans

https://www.campaignmonitor.com/blog/email-marketing/2015/09/email-marketing-in-the-era-of-8-second-attention-spans/

7 Design Mistakes That Make Readers Trash Your Emails

http://www.business2community.com/email-marketing/7-design-mistakes-that-make-readers-trash-your-emails-01336744

10 Best Ways to Use Dynamic Content in Email

https://www.emailonacid.com/blog/article/email-marketing/10-best-ways-to-use-dynamic-content-in-email

How to get your emails opened

http://www.jodieadam.com/?p=231

6 Steps to Creating a Successful Welcome Email Experience

https://litmus.com/blog/6-steps-to-creating-a-successful-welcome-email-experience