mail.com MailCheck 184.108.40.206 Rated 4 out of 5 stars
It's a nice extension, but I don't have the option to not install it as a toolbar. I don't like when an extension installs a new toolbar.
I see it on my Add-on Bar and it's correct.
I search an alternative to Yahoo Mail, mail.com is a possible substitude.
I use FF 17.0.2 ESR and my OS is WinXP.
Thanks to the Authors, great extension.