I heard that Thunderbird is good for email. I can't find it in Firefox apps. I need an app that Googlezilla will allow me to use gmail accounts and my old account from my ISP (Frontier). I have a Gmail app on my Ipad that gets me my gmail accounts but it won't allow me to use my Frontier account. I need an app on my Windows 10 desktop that will access both mail systems. At present I am using Outlook 2010 on my desk top but Googlezilla won't allow me to use Outlook on the gmail server. Any help or suggestions will be appreciated. May your shadow fall in pleasant places.