[Users] Reverse greylisting

[Geoffrey Leach]

Have you considered using the Perl plugin and some custom Perl?

On Tue, 30 Mar 2021 18:05:03 -0700
sylpheed at 911networks.com wrote:

> CM 3.17.8
> 
> Is there a way of doing the reverse of the greylisting through some
> kind of plugin?
> 
> https://en.wikipedia.org/wiki/Greylisting_(email)
> 
> Basically, when receiving email, I would like to be:
> 
> 1. presented with a list of the senders that I have not previously
> approved
> 2. say yes (approve to receive)  or no (don't want to see any of
> their emails).
> 
> 2.1 If I say yes, then I will receive all their email
> 2.2 If I say no, then I will never view any of their emails (they can
> go to some folders)
> 
> This is not related to spam. It's more like the caller-id on the
> phone.
> 
> I have done something almost similar with the filters, but it's a lot
> of maintenance. I have to maintain the filters as I currently have 3
> filters with over 200 email addresses in total:
> 
> * early-trash
> * trash-move
> * old-trash
> 
> Is it possible?

Have you considered using the Perl plugin and some custom Perl?