Why does Gmail warn about "compatibility view" in my captures?
Litmus uses either IE7 or IE8 with compatibility mode enabled (and therefore renders identically to IE7). Were looking into adding IE8 without compatibility mode in the near future.
Where are the advertisements normally seen within Gmail?
Litmus uses a version of Google Apps for Business that removes those advertisements. While its something we appreciate would be useful to see (since those ads are contextual and may change depending on your emails content), Litmus is not currently in a position to include them.
Why is Gmail ignoring my CSS? Why is Gmail ignoring my CSS?
Gmail removes the entire HEAD portion of your emails HTML. It will also remove any STYLE elements. However, you can easily overcome this limitation by inlining your CSS using one of many online tools like http://inlinestyler.torchboxapps.com/
How important is it that my email renders correctly in Gmail?
Based on our aggregated Email Analytics data, Gmails webmail client represents 4.07% of global email client market share.
Because Gmail is a web-based email client, your email could be read using a variety of different web browsers. And indeed, after examining our Email Analytics statistics, we know that 35% of Gmail users are using Firefox to read their email and 33% in Internet Explorer. Litmus allows you to test your email creative as it appears in Gmail across both these browsers.
Below you'll find the Gmail market share data we collected across over 650 million email opens using Litmus Email Analytics. Please remember that the Gmail market share for your own mailing lists is very likely to differ from these averages. Wed strongly recommend discovering your own email client usage using our Email Analytics tool.