How do I stay logged in to 2 different gmail accounts?

Hey, they have this neat new application called Mail. It does not even need a Browser, and you can keep open accounts on whatever servers you like.

The solution is browser based because Google's account login syncs across all tabs and windows in the same browser on the computer you're using. So the solution is to use 2x different browsers, or Chrome Incognito mode for one of the accounts.

If you're using Google Chrome for your Gmail, you can open a new Incognito Tab or Window "Shift+Cmd+N" or just click in your menu "File > New Incognito Window". Then log into your 2nd Google account in the Incognito window.

I do this often for my Google Analytics account because I use my Google Work account for it, but use my personal Gmail at the same time and don't want to log out. So I just open an incognito window and log into my Google Analytics account there and I don't have to ever logout of my personal Gmail. :-)

If you don't use Google Chrome, or don't like Incognito mode, you can do this same thing using two internet browsers. So you can open one Google Account in Firefox and the other in Safari. If that doesn't work let me know.

Using Safari, I just logged into two separate gmail accounts using two separate tabs. I am switching back and forth between the two, and am clearly remaining logged into both. I do this all the time.