Prevent Gmail from displaying image download buttons
Gmail webmail displays an image download icon when a user moves their cursor over an unlinked image.
Gmail HTML codes
List of Gmail supported CSS Properties & Media Queries
A list of all CSS properties supported in Gmail and Inbox.
Gmail clips emails exceeding a file size of 102KB
If your email exceeds 102KB in file size, Gmail will display the first 102KB along with the the message “[Message clipped] View entire message”.
Prevent Gmail from automatically converting phone numbers and email addresses to links
The desktop and mobile version(s) of Gmail automatically convert phone numbers and email addresses to links.
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.
