Google Cloud Plateform
https://console.cloud.google.com/apis/
Admin Google
api
https://developers.google.com/gmail/api/v1/reference/users/getProfile#try-it
php client
https://github.com/googleapis/google-api-php-client
https://github.com/thephpleague/oauth2-client
doc php api google
https://www.googleapis.com/gmail/v1/users/geo@marmits.com/profile