When it is used
Start an <a> href with mailto: and put a token after it, and nanoesis infers an email field.
It is inferred from the mailto prefix. The editor checks that the value looks like an email address.
Example
A mailto link with a token becomes an email field:
<a href="mailto:{email}">{email}</a>In the editor
In the editor this is a single-line box that expects an email address.
The same token can fill both the link and the visible text, as shown.