Goal: Easily send email from an alias based on recipient domain.

For example, in Proton Pass there is a login item with an alias as the user name. The login item also a website "https://login.example.com".

Consider adding a shortcut to create the reverse alias when sending an email to "sales@example.com".

This can help people remember to create the reverse alias and continue hiding their real email.

Displaying the calculated from email address in the "From" field when composing the email will improve clarity.