to:cc:bcc:Finds messages addressed to someone, as a main recipient, in copy or in blind copy.
to: targets messages sent to a person, cc: those where they are in copy, bcc: those where they are in blind copy. In Google's examples, to:me means the messages addressed to you.
to:meOpen in Gmail ↗Messages addressed to you.
to:john@example.comOpen in Gmail ↗Messages sent to this address.
cc:john@example.comOpen in Gmail ↗Messages where this address is in copy.
bcc:david@example.comOpen in Gmail ↗Messages where this address is in blind copy.
cc:john@example.com).from: to find a conversation between two people (from:amy AND to:david).to: also covers Cc or Bcc recipients: it presents cc: and bcc: as separate operators, to be used explicitly.Not documented by Google · Gmail Help: search operators