Junk in invite emails

Is this the right place to complain about the email format sent out by Gitlab for project/collaboration invites? The email is laced with offsite HTML image tags, a bozo no-no if you actually want email to pass spam filters. I have no idea where to report this "properly", so I'll drop it here and hope someone can forward it.

Plain text is your friend when producing autogenerated emails to random recipients.