how come avast isnt seeing it?
No security program have 100% detection or zero false positives
If they did there would not be a malware problem
you can also forward the mail to this address >> sanitize-beta@metadefender.com
after 10 minutes you will recive a scan result > infected/not infected
Info here >
https://www.opswat.com/metadefender-email-security-cloud-mesc-faq