It's essentially a safer way to share emails. The email is hidden from the user until they can prove they're not a robot (via reCAPTCHA v3) and it provides the

It's essentially a safer way to share emails. The email is hidden from the user until they can prove they're not a robot (via reCAPTCHA v3) and it provides the user more options (instead of just a default provider) E.g.: On your personal website, instead of putting a mailto link to your email (which exposes it to email harvesters and doesn't give any choice to which provider the visitor might want to use), you can put a bettermailto link instead. This gives your visitors choice and gives you security.