Testing by Email on Acid showed that the maximum width of an email that can fit on the screen in Outlook and Yahoo is about pixels. Therefore, if a significant number of your subscribers use these email clients, we recommend that you stay below px or simply use the more common px width. I built an email, its width was pixels. It worked fine in all major email clients, although its background did not display in Microsoft Outlook.
And the email below, which I received from georgia telegram database a famous brand, is the proof that px is just an average size of an email, but not a mandatory one: Email template width_px (Source: MailNinja Email. Email width is pixels. Gmail, macOS) There is also a belief that Gmail does not display the image and background color if the width of the email template exceeds pixels.
However, numerous tests with our email testing tool and several emails I open in my Gmail account prove the opposite: the emails display perfectly and even the backgrounds display fine. Email template width_px_and background (Source: Forbes Daily Dozen Email. Email Width px. Gmail, macOS) Another myth is that the maximum email width for Yahoo! Mail must not exceed px.