Hi! For details on how to add your email addresses as contact information in your Editor's Box, please see this support article https://support.paper.li/hc/en-us/articles/215880817-Account-Settings-Pro-Edit-your-Social-Network-icons-and-links.
As far as safety, bots and those looking for addresses to spam normally pull email addresses from web pages when they're in their raw form as links (eg.: firstname.lastname@example.org). Our system actually uses a script that opens a new contact window when the email icon is clicked, so there's no chance of bots or other malicious users abusing your email address.