SecureMailtoConverter helps Mac users encode email addresses for HTML pages as a way to prevent unauthorized people from reading them. By doing so, you block illegal email address harvesting, hence, you won't receive any spams on the encoded email account.
The main window of the utility consists of several fields which you need to fill with email address, link, text, title tag, and, if necessary, subject and body. Once you finish entering the requested information, the app lets you preview the encoded email address.
This program displays the converted address in two formats (with and without "mailto:") which can be copied to clipboard and pasted within third-party apps.
Except for this, there isn't much to add about SecureMailtoConverter. It simply does what's being stated on the homepage of the developer: encodes email addresses for HTML pages by generating a HTML code.
In conclusion I'd say it's worth installing SecureMailtoConverter on your Mac if you ever need to encode email addresses for HTML pages. This program is very simple to use, immediately offers you the info you need, and is free of charge. Plus, the app is available in many languages.