How to actually use the functions

Hello,

First of all, sorry for being so unable to understand how the plugin works!

Let’s say I have this in my theme:
echo '<a href="mailto:'; echo $email; echo '" title="Click here"><i class="fa fa-clock"></i></a>';

how am I supposed to use the functions? I have tried every possible solution I can think of, whitout luck.

Is it for instance supposed to be like this?
echo eeb_mailto($email)'; How do I then add the rest of the attributes?

Or this?
echo '<a href="mailto:'; echo eeb_mailto($email); echo '" title="Click here"><i class="fa fa-clock"></i></a>';

All I want to achieve is to obfuscate the email address…

Thanks for any response!