Default email service

i’m running firefox all the time now, but whenever i click an email adress on a webpage,it’s outlook that pops up…i don’t want to use that,
how do i change this?
i looked in control panel/internet options/programs…but even there it can’t be customized…
any :help: ?

It’s in your Windows Setup from the Start Menu. You can set default program settings. Email program used is one setting.