Posted on September 13, 2011 | Magento 1
Magento by default will choose the logo_email.gif from the default package and default theme. To force it to use the logo_email.gif or any other image from your custom package or theme add the following snippets to your skin url.
_package="MyPackageName" _theme="MyCustomThemeName"
Example:
{{skin url="images/logo_email.gif" _area='frontend' _package="MyPackageName" _theme="MyCustomThemeName"}}