I recommend that you use Windows Live Mail 2011 (WLM 2011), which I run on Windows 7.
You can download Windows Live Essentials 2011 from the Internet Archive:
https://archive.org/details/windowsliveessentials2011_201908
WLM 2011 is one of several programs included in this installer. When you run the installer it gives you an option to choose which of the programs to install.
If you need help to install Windows Live Mail, ask here. Or search this forum for the term windowsliveessentials2011 (i.e. search for the installer program).
This is a direct link -
https://archive.org/download/windowsliveessentials2011_201908/wlsetup-all.exe