Using Sitecore 8.2, when I add a mailto:link it gives me a validation error that external links require a target. However, the modal tab for mailto links doesn't contain a target field, and if I insert something into the Hyperlink tab it either ignores it or uses just the fields on that tab - ie it won't seem to pull from multiple tabs - this is when I confirm by going into edit html. I'm wondering if there is any way of doing this other than manually editing the html or am I just missing something?
When you insert a link via the
Hyperlink Manager you should have an
<a href="mailto:firstname.lastname@example.org">Email me</a> will be generated. See also the documentation: https://doc.sitecore.com/users/82/sitecore-experience-platform/en/insert-a-link-in-a-text-field.html