Imports friends from gmail and send them a message

Question

i am working on app that send an invitation to user. i already post a message on friends facebook wall but now i wish to send invite to gmail user too

i want to perform following task from my app.

1. Import all contact from my gmail
2. Select all of them and send them a message with download link of my app.

i follow This Tutorial but with the help of this i just can import friends it not allow me to select all of them and send them message with download link of my app

need guidance from my seniors. May my question rate as duplicated or closed but i didn't fine any useful material from internet.

Regards!

Adnan

Answer 1

Take a look at this, it is a link to their contacts API. Especially on the section titled: Retrieving all contacts. The sections below this one may help also, they are titled Retrieving contacts using query parameters, and Retrieving a single contact.