access delegated mail folder with gmail api

问题:

let's say there are [e-mail] and [e-mail]. Alice has delegated her account to Bob. When I authenticate with Bob and try to list Alice inbox using the REST interface I get a 403 error:

[e-mail] does not have privileges to [e-mail] mailbox.

The URL used to query the inbox is:

www.googleapis.com/gmail/v1/users/[e-mail]/messages

When I use [e-mail] (or me) as userId there is no problem. How do I access Alice's account?

Greetings

回答1:

You would need to get alice's consent and oauth token to access alice's account through the API--delegation is not supported like it is in the web interface.