I have a set of filters that auto add emails sent within a particular domain as 'internal'e.g. if me@example.com sends an email to boss@example.com, it is tagged internalThe problem is, my filter is not truely internal, because say I send an email to person@example2.com and CC boss@example.com, it picks the latter up and flags it internal, but this is not an internal email.I need to filter emails sent to a particular domain, and only that domain.
Filter messages sent to a particular domain, and only that domain
gmail;gmail filters
(Converting my comment to an answer, as requested.)I'm afraid that Gmail's filters aren't sophisticated enough for that.