Danyel Fisher pointed out this cool Gmail tip.

Note that you can get around the label issue by forwarding messages to “myname+label”, and then searching for “+label”.

(Gmail allows you unlimited “+” addresses. For example, all my mail that’s forwarded from an external account goes to [email protected])

Aforementioned "label issue" being the issue with gExodus 0.2's new label feature which prefixes a user-specified string to the subject of each forwarded email. If I'd known that earlier... Nah it was good practice. It actually forced me to figure out how to modify an existing email's headers.