[exim] Parse custom headers in email

Hello,

in my local antispam service I have a large list of email marketing providers, to which I assign 30 points, my question is, it is possible to analyze the email in search of a personalized header (called msgid_mkt_domain) and move the mail to a specific folder? I have read that it can be done through python but my knowledge of that language is very basic.

Regards,