I've been given the task of searching our company emails for emails that were sent to 10+ recipients, to check for accidentally included mailing lists.
However, I've checked all the documentation I can find about how search works in Gmail and I can find many, many, many articles talking about how to filter by specific recipients, but none of them cover the opposite: How to search for a quantity of ambiguous recipients.
Does anyone know how this can be done?
Maybe something like:
to: * AND * AND * AND * AND * OR *
to:(qty > 10)