Is there an option to rewrite the final recipient, to remove some extra
characters, with some header checks, for the incoming emails.
This is what I want to achieve:
For instance, if postfix receives emails for [hidden email], the
final recipient would be rewritten as [hidden email], and an
additional header would be added, for instance, X-Valid-Date: 0304.
Maybe I can do this with recipient delimiter, but can I have more than
one character recipient delimiter in postfix?
The idea I have in mind, and the first tests are promising, is to allow
my users to register on web sites with a temporary email address. The
address will be valid only on day, 03/04/2019. So far, the Sieve
scripts worked very well to do this.