Masthead image in email is rendered narrow and not centered in Outlook

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I am using a 640 px wide banner for my email template.  It looks good in Emma and he previews, but when I send it to an Outlook account, it is too small.  The result is positioned to the left (and not centered as it should be), and it is horizontally too narrow by at least 50 px.  I went into the settings and changed the margins and the padding to zero, but that didn't change anything.  Any suggestions?  Thanks.

I should note that I tried one suggestion that I found here:  slice the image into three and use the multi-image function.  This actually works perfectly in Outlook, but on mobile devices the images stack.


Note: This conversation was created from a reply on: Having trouble sizing the header image without a gap.
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Joslin Diabetes Center

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Posted 3 years ago

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Greg Rathbun, Customer Service Specialist

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Official Response
Greg with Emma Support here!

I took a look at a copy of your most recent email (TEMPLATE) using a site we use for testing called Litmus (used to test email rendering in different email programs). While it looks great in almost all email programs, I do notice that Outlook 2007 positions the header image to the left like you described.

For better or worse, the problem in this case appears to be Outlook rather than your content. When designing recent versions of Outlook (2007, 2010, and 2013), Microsoft chose to base their email rendering on Microsoft Word (a great word processor but not so great at rendering HTML) rather than basing it on a web browser (like most other email programs). Because of this, these versions of Outlook are particularly quirky in how they render emails. Trying a different template or playing around with your image sizing may help (and may not). I'd recommend trying to tweak your content, and, if it fails to help, accept that Outlook will not render yours emails in the same way as other email programs. 

If you're interested in more details on rendering issues in Outlook, Litmus has a great article on it at this link