Advice and answers from the Astro Team

From iOS, when drafting a message you can choose to attach a file from the main cloud file services, such as Box, Dropbox, Quip and Google Drive. If you need to review the available options, click 'More'.

A similar option exists on Android for adding from Box, Dropbox, Google Drive or Microsoft OneDrive.

On Mac, a user can add files from the cloud services if they have a sync folder for those services on their Mac.

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