How do I make the clinic phone number in an email or on a website clickable on a cell phone?

When a phone number is hyperlinked with the tel: scheme (e.g., <a href="tel:+1234567890">Call Us</a>), clicking the link triggers the default phone or calling application on the user's device to initiate a call to the specified number.

Highlight the phone number and insert a link in the email. See image below.

The hyperlink would look like this: 760-334-5013

If you want to test this, just make a canned reply and send yourself and email so you can try it out on your mobile phone.

The href functionality mentioned above can be used to make the phone number clickable on a website.