- Bulletproof buttons generator
- Place all of your CSS classes on the elements in your HTML email
- Campaignmonitor.com – an overview site of responsive emails
- The A List Apart article, Can Email Be Responsive?
- Zurb’s article, Outlook: Your Best Worst Enemy for Responsive Emails
- Litmus is the industry standard for testing emails on multiple platforms. Using their service is a good way to realize that no design looks perfect on every platform.
- https://litmus.com/
- https://litmus.com/resources
- https://litmus.com/builder/
- Free: testing on Outlook 2003 and Gmail on IE10, and access to Litmus Builder
- Otherwise: $79 a month
- Tutorial on how to create a responsive email and the considerations for all email viewers
- Article on how to use media queries in HTML emails