I've been asking Windows 10's Ask me anything and searching without much luck. I am using Firefox, and when presented with an email hyperlink, a box pops up asking me to use an email client I don't want to use, Outlook 2016 and Mail are two of the offerings. However, I cannot direct the settings to Outlook 2010.
I have looked through Default Programs, and cannot figure out how to add Outlook 2010 in that list. I don't want override Mail, and I don't want to use Outlook 2016. Any pointers would be very appreciated.
Mail
/Outlook 2016