To create a link to send email, use <a> tag, with href attribute. The mailto link is added inside the <a> tag. Just keep in mind to add the email address where you want to receive the email in the mailto link.
You can try to run the following code to create a link to send email in HTML.
<!DOCTYPE html> <html> <head> <title>HTML email link</title> </head> <body> <h2>Contact</h2> <p>For any queries: <a href="mailto:demo@example.com">Contact us</a></p> </body> </html>