Privacy warnings for mobile push notifications gateway

For those of us that care about privacy, this page should warn about what the implications are of using a push bridge.
Also the settings page on this, seems to be aware that displaying messages in notifications is a privacy issue, but only related to people with physical proximity to the device.
Handing over the data to an external company is not addressed in the page, plus the possiblity of the information being encrypted in transit or other existent or possible measures should be explained.
Thanks.

This should be added to:
https://rocket.chat/docs/administrator-guides/notifications/push-notifications/

And to:
/admin/Push in the app

I don't think they are encrypted:
https://developers.google.com/cloud-messaging/gcm

I had already commented on this here:
https://forums.rocket.chat/t/rocket-chat-documentation-push-notifications/1015

Review the push-notifications documentation page and the /admin/Push settings page, then verify the linked Google Cloud Messaging information before deciding what privacy and encryption details can be stated. Done means both locations explain the external data-sharing implications and relevant protections clearly and accurately.