Who operates this service. This is a private, self-hosted bridge run by its operator for a small number of explicitly allowed accounts. It is not a public service.
What Google data it accesses. With your consent, the bridge uses the Gmail API (scope gmail.modify) to read your mailboxes, messages, labels and attachments, to change labels and read/starred state, to save drafts and to send messages you compose, and to receive change notifications, all on your behalf and only when your mail client asks for it.
What it stores. Your OAuth tokens are stored encrypted on the server. A bounded cache of message metadata and bodies you recently viewed, your draft/send ledger and scheduled-send queue are kept on the same server to serve your mail client and are deleted when they expire or when your connection is removed. Nothing is copied elsewhere.
What it does not do. Your Google data is never shared with, sold to or transferred to third parties, is not used for advertising, and is not used to train any model. Message contents and addresses are never written to logs.
Limited Use. The use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.
Your control. You can revoke the bridge at any time from your Google account permissions; the stored tokens then stop working. Ask the operator to delete your connection and all cached data.
Contact. The operator can be reached at the support address shown on the Google consent screen.