A mailto: link generator is a tool that allows you to quickly create clickable email links for your website or documents. These links, when clicked, open the user’s default email client with a new message pre-populated with the email address, subject, and/or body that you specify. Using a mailto: link generator can be extremely helpful for website owners, bloggers, or anyone who wants to make it easy for their audience to contact them via email. Instead of simply displaying an email address on a webpage, which can be prone to spam bots harvesting the address, a mailto: link provides a convenient and secure way for users to initiate an email communication. a pre-written message in the body of the email.