[ferrety]

Originally Posted by BritTim

You can create a rule based on the To alias and the X-Mailer header.

Go to Settings->Rules, click New rule, and use

If all of the following conditions apply
Any recipient email  is exactly  <the desired alias>

(Add condition)

A header called  X-Mailer  begins with  MailChimp Mailer

Under Action select
Permanently delete the message

Then click Save

Thanks Tim appreciated would you be willing to give me the sieve script for it?