You may use this to check mail before you open any attachments

Metadefender Email Security Cloud
https://www.opswat.com/metadefender-email-security-cloud-mesc-faq

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1. What is Metadefender Email Security Cloud?

Metadefender Email Security Cloud (MESC) is a free online service provided by OPSWAT for you to scan and sanitize suspicious emails and email attachments.

2. How do I use MESC?

Simply forward any email to sanitize-beta@metadefender.com to run a comprehensive email threat scan. After the scan, you will receive an email reply with the scan result as well as the regenerated, sanitized copy of any email attachments.