Email Markup in Gmail
Note that this only is available to high volume senders (<a href="https://developers.google.com/gmail/markup/registering-with-google" rel="nofollow">https://developers.google.com/gmail/markup/registering-with-...</a>):<p>> Consistent history of sending a high volume of mail from your domain (order of hundred emails a day minimum to Gmail) for a few weeks at least.