Import filter rules from Apple mail

Import filter rules from Apple mail

How do I import filters (rules) from Apple mail?  The example you give shows how to do it with Mozilla, & Windows, but I can't find a way of doing it with Apple mail.  I've located a file called MessageRules.plist, but then I get the message that only .dat format is allowed.

The only reason I want to import some filter rules is that Zoho's own filters seem very limited - and only allow me to filter by message subject but don't allow me to filter by key words in message content.