If I am logged into Gmail and I quit my browser, then reopen it, I expect to find that I am no longer logged in. This is the way it used to behave.
Now unless I explicitly log out, it brings me right back to my inbox.
I have not checked "stay signed in" at the Gmail login screen, and I've set Firefox to delete all cookies when I close the browser. What else do I need to do?
I'd accept a browser-based solution for this, but I'd really prefer an account setting in Gmail so that it applies to all machines and browsers that I may use.
I think this problem could be described as "how can I ensure that session cookies are deleted when the browser is closed". That would fit with the original idea of session cookies: they are for a single session.
How can I keep Gmail from maintaining my session?