Summary
Email link:
<a href="mailto:john@example.com">john@example.com</a>Phone link:
<a href="tel:+15555551234">(555) 555-1234</a>Details
To create an email link, use an anchor tag with the phrase mailto: at the beginning of the href attribute. When a user clicks the link, it’ll open up a new message window in their default mail client.
To create a phone link, use an anchor tag with the phrase tel: at the beginning of the value for the href attribute. Then add a phone number.
Demo
Exercises
Using your text editor, try creating one email link and one phone link.
References
Creating hyperlinks on MDN