I must confess it's working but its not perfect, I was using Incredimail but I've always mistrusted it, when I uninstalled it recently my response speed got a lot better but I guess it could have been having both on board at that time.
What do you use for your mail ??
The way I did it was to go to the start page, right click the WLM tile and select 'pin to taskbar'. On the desktop, right click the WLM icon on the taskbar and right click windows live mail in the list and select properties. In the window that opens click on the tab that shows 'open file location'. Right click wlmail.exe and select 'create shortcut'. You'll get a popup saying it can't create it here but do you want it on the desktop? Select yes.
Bottom left with cursor and right click the square start icon and select 'run'. Type or copy and paste shell:startup in the Open:field and click OK. This opens the startup folder. Drag the WLM desktop shortcut into it.
I know that not everyone agrees with me but I installed Start8 from Stardock which in Desktop view gives me back the layout I am familiar with from Win7 and so it was easy for me to locate the Windows Live Mail icon from All Programmes, right click it and click to Add to Start. Job done and I now have Live Mail as one of my Apps. I couldn't get on with the Windows 8 Mail App and so unticked that from my front page.