A little farther up that doc:
"has: Specifies an attribute that the message must have. The types of object you can specify are "attachment", "phone", or "url". For example, has:attachment would find all messages which contain one or more attachments of any type."
I'm guessing these are the only attributes that it's coded to look for. But I am also curious to see how difficult it would be to create custom attributes (i.e. ssn) for this type of search. |