Checks several addresses at once and says, for each, whether it is excluded from your auto BCC. An address is excluded when it is on your autoBccExcludedEmails list or its domain is in your autoBccExcludedDomains, including exclusions set by your workspace role. Matching is exact and ignores case.

Results come back in the order sent, each with the address as you sent it. Repeated addresses appear once. If emails is missing, empty or not an array, the response is an empty array with status 200.