This is as scary as it sounds.
Gmail or Google doesn't provide us with any way of emailing them directly.
Before you draw any other conclusions, let me tell you that I love Google in every possible way (except this), and I truly understand that not having any email address (something like firstname.lastname@example.org) must have had some reasons, for example, to keep themselves from receiving thousands of mails per minute?
But in case your account goes down or you need a help immediately, you don't have an email address to directly post to them, rather than a few Help Center article links, and if you're lucky, a form that can be used to send them a message.
Change.org provides a way to associate an email address with a petition so that it is notified every time you sign the petition, but the lack of such an email address prevents me to send your requests to Google/GMail.
I've already passed it on to all the Google channels that I know, and will be looking for more ways.