Substituting Meta Viewport tag with alternative CSS method for HTML emails

In an effort to improve support for legacy Blackberrys, we made the decision to take out the meta viewport tag 

<meta name="viewport" content="width=device-width, initial-scale = 1.0, maximum-scale = 1.0" />
from our HTML emails. Some major email testing blogs have mentioned that this tag could potentially lead to blank screens.

We noticed during testing that removing the tag did cause some issues with how the email displayed on Windows Phone HTC HD7 devices. You can view the results of our Litmus test here: () With the tag present, the email appeared at 100% zoom, while without it, the email was zoomed out to fit the screen. This seemed to only be a problem with this particular device and not others.

We are now exploring alternative CSS techniques to replace the tag and work around this issue. While the meta viewport tag is commonly used in popular HTML email boilerplate templates, we have found that using -webkit-text-size-adjust: none; can sometimes result in blank screens on Blackberry devices.

We have experimented with various solutions such as media queries and zoom settings, but there is a concern that these adjustments may impact other devices with similar screen sizes and resolutions. It's yet another tradeoff that comes with coding for emails, but we wanted to raise awareness about this issue since there isn't much information available on it.

csswindows-phone-7html-emailmetaemail-templates

Answer №1

The World Wide Web Consortium is backing a CSS solution, although it may take some time for full support to be implemented. Interestingly, Microsoft appears to be in favor of this as well, so experimenting with it could be worthwhile.

The syntax without prefixes is @viewport, while Microsoft utilizes @-ms-viewport.

Answer №2

In my testing, I may have found a potential solution. Although I can't guarantee it won't create other issues, I am willing to award the bounty to a better alternative.

Currently, I am not experiencing any problems with Blackberry and Windows Phone 7.5 when rendering at 100% scale.

<!--[if IE]> 
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
<![endif]-->

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