Resources to improve HTML email design

Email is one of the most effective channels of marketing conversion but one of the hardest to perfect. This post will explore some of the best email marketing guides, tools and tips to improve your HTML design, testing, analytics and email conversion rate. 

Resources to improve email marketing success

Campaign Monitor

Campaign Monitor is an industry-leading email client covering the essentials is responsive HTML email design, testing and analytics. The brand's resource section contains an extensive collection of guides for the email marketer to improve responsive design, analytics and conversion rate.


Litmus previews email design for spam filter testing. Litmus allows for email campaign testing across over 30 email clients and reports back to the user regarding multi-device compatibility. A valuable tool to assess in the success of email campaigns, Litmus considers HTML design with images turned on and off.

Moveable Ink

Moveable Ink focuses on the relationship between brands and their customers. A focus on segmentation, contextualisation and personalisation secures Moveable Ink as the industry leading blog for a unique client-customer relationship.

Email Wizardry

Email Wizardry is the work of Nicole Merlin, an email engineer at Campaign Monitor. Email Wizardry focusses on the technical aspect of email marketing, offering readers tips and code snippets for responsive HTML email design.

Email on acid

Email on Acid is a blog focussing on responsive HTML email design and deliverability. Email on Acid acknowledges the difficulties associated with responsive email templates and offers readers valuable resources to minimise custom media query work. The site offers a free responsive email template for email design across any devices.


Vero is an email marketing tool with a difference. Tailoring marketing communications to user activity is Vero's premise and the company's blog reflects the importance of user engagement through email. An array of unique content with a focus on growth hack trends, Vero is a resource to be aware of.

And the rest?

It wouldn't be a complete list without mentioning the inbound heavyweights: Hubspot, Marketo and Oracle all do some invaluable guides on email marketing. The content tends to be less specific than some of the technical sites mentioned above but covers the essential elements of a solid email strategy. Whatever level you are at, a regular review of industry resource guarantees improvement of email marketing conversion.