To make an e-mail link is very simple. If you want someone to write you an email the best thing to do it would be to put at its disposition a link with your email and a pre-established subject.
Input
<a href="mailto:someone@ exemple.com?subject=Questions">Email Me Here</a>
Output
Email Me Here
In case you don't want to add subject to the email, you can do it with the help of this code:
<a href="mailto:someone@ exemple.com">Email Me Here</a>
Output
Email Me Here
<a href="mailto:someone@ exemple.com?subject=Questions">Email Me Here</a>
Output
Email Me Here
In case you don't want to add subject to the email, you can do it with the help of this code:
<a href="mailto:someone@ exemple.com">Email Me Here</a>
Output
Email Me Here