Let your users input email addresses into your refer-a-friend form directly from their address books without leaving your website.
Embed your users’ address books to let them easily create large recipient lists for your e-cards, e-vites and fundraising campaigns.
Ingest address books from dozens of webmail providers around the world to power your find-a-friend feature or contact database population process.
Type: booleanDefault: false
When this value is true, contacts that do not belongs to a group will be omitted from the widget view. This option only applies to Gmail currently.