I'm running Vista on my computer and it can't be updated to Windows Live Mail 2012 according to the specs. I'm also unable to get the free update to Windows 10 on Vista. I currently have Live, Hotmail, and Gmail synced to my computer. What will happen to my ability to receive my all of them without updating? 

I also have a computer running WLM 2012 but will be upgrading to Windows 10 after tax season . . . just to be on the safe side in case there is a glitch. Should I install the WLM 2012 update on that computer for now?

Please note that Windows Live was a free download, if that matters at all.

Thanks for any help you can provide.