Problem :
A while back Google added a multiple sign on system, allowing you to sign into multiple Gmail accounts in a single browser.
If you maintain more than a couple of Gmail accounts then signing in them all is a pain. Are there any Chrome extensions, or other scripts (AHK or whatever) that automate signing into Multiple accounts?
Solution :
You don’t need to. You can just use Google’s multiple sign-in feature.
Make sure that you enable multiple sign in…, but be warned: Google’s offline products like Offline Gmail, Offline Calendar… that is all explained in the link above.
For more help, visit the Google Accounts Help pages