You are right, it would probably be a long shot. I am basing this on some assumptions, such as that the truncation happens after Gmail's content sanitizing has

You are right, it would probably be a long shot. I am basing this on some assumptions, such as that the truncation happens after Gmail's content sanitizing has already happened, not before. But even omitting the security aspect, such rude truncation is something I would have expected on some low-budget webmail app done as a high-school student's IT class project, not on a polished offering of a multi-billion company.