Multiple GMail accounts with Gnus

For multiple GMail accounts with Gnus, you have to make two nnimap entries in your gnus-secondary-select-methods with distinct names:

(setq gnus-secondary-select-methods '((nnimap "gmail"
                                         (nnimap-address "imap.gmail.com"))
                                      (nnimap "gmail2"
                                         (nnimap-address "imap.gmail.com"))))

Your netrc entries will then be:

machine gmail login account@gmail.com password "account password" port imap
machine gmail2 login account2@gmail.com password "account2 password" port imap