Is your intention to create an e-mail link from an element on your website (so the e-mail client will open up on a visitor's computer when they click on it)?

In this case, select the element in Website Maker that you want to attach the link to. Go to the "Properties" panel on the left-hand side and proceed to the "Linking" section. Configure the link to be an "external link"/"email link" and type in the destination e-mail address into the URL box. Save & publish. Done. Clicking on this link on your website will open up a new e-mail if an e-mail client is properly configured on the visitor's system.

I hope this is what you were looking.