Google announces Gmail contextual gadgets
Google already has some features available in Gmail through Labs which enables the users to check out links included in the mail from web services like Flick, Picasa Web etc.
They are now opening up this platform to third party developers.
Currently only trusted testers are allowed to develop similar tools for Gmail.
Google spoke about Gmail contextual gadgets:
At Campfire One this week we announced that we will soon open Gmail contextual gadgets as a new extension point for developers. These gadgets can smartly draw information from the web and let users perform relevant actions based on the content of an email message, all without leaving the Gmail inbox. For instance, contextual gadgets currently available in Gmail can detect links in emails to show previews of documents, videos, photos, and more, right inside the messages.