[Cryptography] what application creates single-use coded email addresses?

[John Levine]

In article <c3158595-cd21-6c8b-8905-7f2a0489d519 at av8n.com> you write:
>> email mangling

>Bob Hall at Bell Labs developed rather fancy "channels"
>  http://lorrie.cranor.org/pubs/spam/spam.html

He got AT&T to assign him the rights and tried to sell it as a service
called Zoemail.  There was a patent which was involved in a few lawsuits
but it's long expired now.

https://patents.google.com/patent/US5930479A/

R's,
John