As title,
I'm playing with sieve, it is a powerful tool.

I have made a lot of script that automatically mark as read, move in folder, reply to some sender, ecc ecc...

Now I need a script that delete all emails older than 7 days in a specific folder.

Share you scripting if skills

I answer to myself.
It is not possible to do this with sieve since sieve process the email while it arrives not after.

better do it in a cron job with this

4w means 4 weeks.