I am writing a script to access all Google apps domain users emails by using IMAP and Google OAuth. This script should let me delete, move and export any users emails. However, I cannot find any clue in Google API to impersonate another user to access his email. (This impersonation is easy for Google Docs, but not available for Gmail. ) Please help, any suggestion is appreciated. Thanks in advance.
2Legged OAuth 1.0 can solve this problem. I don't know when Google will publish 2 legged Oauth 2.0 to Gmail and other API services, but I am looking forward to it.