Mailcontrol: Mail Attachment Whitelist/Blacklist

It would be a great feature add if we could define a per account white/blacklist for attachments to better suit the clients utilising the mail servers for their business operations. As some business’ work with certain file types that traditionally and rightfully are blacklisted due to there notorious use for malicious intent there are still some edge cases where whitelisting would be beneficial without whitelisting the entire domain which could in tern open other avenues for attack with domain spoofing and other vectors.

Thank you