It's so frustrating reading this, because this blog has about 75% useful information, with 25% just left there unsaid.

> On iOS, Gmail doesn’t let you view full headers

True! But Gmail on desktop does provide full headers. Why not post them so the rest of the community can step in and help out?

I lost the original email—the attacker deleted all evidence and then cleared my trash (and yes I tried using the Google tool to find deleted emails, but the attacker cleared that too). The reason I have this email is because I forwarded this email on to phishing@google.com, before the attacker deleted everything. When I got control of my account, and removed the scammer recovery methods (he added a windows device—I don’t use windows, and a Brazil phone number), the email bounced back from phishing@google.com (apparently Google doesn’t accept that address). So what I have is the bounced-back copy.

They're not saying they can't get the headers, the point is that if you're using iOS you don't have access to the headers to validate