[Solved] GMail Forwarding
Is it possible to use gmail's "labels" to forward emails to another email address? In other words, if I label an email "forward" it then automatically forwards to another email address? Or, similarly, since on Apple Mail on Mac and iOS show labels as "folders" is it possible to have every message in a given folder forwarded to another email address?
Firstly - it is generally better to have any "rules" processed by the mail server rather than a client application (such as Apple Mail) on a device. This means the rule will be processed without needing that device to be turned on & the application running & the internet connection up.
But for your specific requirement - for Gmail "filtering" the automatic rule processing (which can include forwarding the message) is triggered when a message is received. I don't believe there is any filtering activated within the native Gmail system when a message is "labelled" (or moved to a folder). So that would mean either finding a 3rd party service that offers this feature by hooking in to your Gmail account or using an "on client" mail plugin. (ie. activated outside the Gmail web interface).
The only set of Mail plugins that I'm vaguely familiar with are from https://smallcubed.com/scs/ and which Dave & John often refer to. You'd have to check if, for instance, Mail Act-On might do what you're looking for.
This might be one of those cases where it's more effective to review why you're performing this action and whether the desired result can be achieved by a different process flow?