With the average person spending a substantial amount of time online everyday and having access to at least one kind of mobile device, the field of digital advertising has an incredible opportunity to meet consumers face to face; on their personal devices. For this kind of advertising to reach its full potential, there needs to be an accurate way to measure its accuracy and effectiveness in order for it to be a lucrative part of a brand advertising budget. That's where Vizu and its Vizu API comes in - a tool for gathering real-time information about online customers and audiences.
Additional third party integration with Gmail has been possible (you only have to look at all the contact import features from sites like Facebook), but these have either been clunky manual procedures that involve exporting contacts to a CVS file, or they require you to supply your email password. Neither option is all that attractive. Now there is an alternative. Google have recently added the ability to access the IMAP/SMTP features of particular Gmail account using OAuth.