On Mon, Mar 06 2017, Steven Allen <steven@stebalien.com> wrote:
> Instead of iterating over all messages in spam, why not just iterate
> over *new* messages (`tag:new`) in your pre hook? That is (pseudo code):
>
>     for message in `notmuch search tag:new and tag:spam`:
>         for author in message.headers["From"]: 
>             author = clean(author) # Extract the *actual* email address (name@domain).
>             # There are probably faster ways to check this...
>             if `notmuch count tag:sent and to:author` > 0:
>                 notmuch tag -spam -- message
>
> That should be reasonably fast.

Thanks for the suggestion, Steven.  Yes, my intention was to restrict
over just "new", and yes, it is considerably faster.  Thanks for the
tip.

jamie.