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Boost Deliverability with Optimal Text-to-Image Ratio in Emails

[This blog was originally posted on April 19, 2017, and has been updated to showcase new examples]

As an email marketer, you need to take care of a lot of things. Apart from writing engaging and relevant content, you also need to add design elements to please the viewer’s eyes. But, the most important thing is to get your email delivered to your subscriber’s inbox- this is the only thing that ensures you rope in respectable open and click-through rates.

Emails should be designed and coded by keeping the concern of email deliverability in mind. Most ISPs look through the keywords that indicate whether the emails are spam or not. And hence, image-heavy emails with low text HTML ratio can raise a red flag for the spam filters.

Although different spam filters have different criteria for a healthy balance of text and graphics, it is recommended that the marketers maintain a proper text-to-image and text to HTML ratio to ensure their emails sail through the spam filters and land in the viewer’s inbox successfully.

Mailchimp, in their blog, recommends following an 80:20 text to image ratio in emails, i.e., 80% text, and 20% images.

Why Is Maintaining The Image-Text Ratio In Emails Important?

‘Image Only’ Emails Go Into SPAM

Spam filters block image-only emails. Spammers can hide secret links or content in the mail by sending image-heavy emails so that their content is not recognized and read by the spam filters. And so, an email that lacks a healthy balance of text and images is sure to get rejected by the spam filters.

Images Maybe ‘Turned Off’ By Viewers

Some users and email clients generally keep the images turned off at their end. If the image is blocked, the email will appear to be either incomplete or completely blank. Such emails are likely to be ignored, marked as spam, and even unsubscribed.

Images May Take More Time To Load

When there are more images and less text in an email, the images may take more time to load depending on the browser and internet connection of the user and hence may not convey the entire message of the email. Emails with images that take more time to load have lesser click-through rates and conversion rates.

Take a look at this email from Walmart.

All the information about the offers and CTA are contained in the image. And when the images are turned off, the same email appears as below:

Here, the alt tags serve the purpose of conveying the message of the email. But it is essential to maintain a low text HTML ratio so that the message is conveyed in a better way.

How To Make Sure Your Email Gets Delivered?

Email marketers need to bear in mind the following points while planning an email campaign:

For more insights on Email Deliverability, refer our Infographic:

Wrapping Up

In your next email campaign, make sure to maintain the 80:20 text-to-image ratio and stop believing in the taboo of “More the images, the better the email will be.” Even better, test your emails with various text-image ratios and find out what works best for your business.

Happy Emailing!

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