Target Yahoo! Mail Android using CSS Media Queries
How you can have styles that only target the Yahoo! Mail Android app, using a simple workaround.
Yahoo! Mail HTML codes
Target Yahoo! Mail iOS using CSS Media Query
You can target the Yahoo! Mail iOS app by using the @media yahoo and adding a max-width to the media query.
Remove gaps between images in Gmail and Yahoo! Mail
Gmail and Yahoo! Mail add a spacing between images. This issue first showed up when viewing emails in Firefox and later spread across other modern browsers including IE, Chrome, Opera, and Safari.
