I couldn't find a post that really matches my question, so here we go:
I want to implement a "share via mail" button to my website, so when you click the button let's say outlook or thunderbird opens and gives you the option to share the website link within a new mail.
I'm not quite sure but I think I won't be able to do it completely with html only, cause facebook i.e. is also running JSs when you link to their share-site.