Executives at my company typically send/broadcast messages with blank To: & Cc: fields (i.e., every address/DL is Bcc'd). I'd like to filter these messages to a specific folder.
I can't simply filter messages that don't include me or the DLs which include me for two reasons:
- I am sometimes added to DLs without notice
- DLs of DLs (of DLs (of DLs)) are in constant flux
I don't want to filter all messages from the execs, only the broadcasts.
Is there any rule or small set of rules which could accomplish this?