JavaScript, embedded, in email is, pejoratively, a bad idea by putting too much power into a transmitted email.
Too many security holes, discovered and undiscovered with JavaScript, not to mention JMTP.
Better yet,
Hashing the local part of the email address and retrofitting mail clients to do the mapping and rejection is the best way to delete unwanted and unsolicited emails.
Couple that with new decentralized lookup of sender’s PKI (as well as DKIM).
That should add years/decades to SMTP viability and usability.
Too many security holes, discovered and undiscovered with JavaScript, not to mention JMTP.
Better yet,
Hashing the local part of the email address and retrofitting mail clients to do the mapping and rejection is the best way to delete unwanted and unsolicited emails.
Couple that with new decentralized lookup of sender’s PKI (as well as DKIM).
That should add years/decades to SMTP viability and usability.