gmail flags arduino activation email as spam

Just set up my account, and had to look in GMail’s spam folder for the activation email. I think this is the first time I’ve ever had a false positive.

Received-SPF: pass (google.com: domain of 0000014336427473-56f357d5-7b40-4e58-921b-fa7bb0b86df0-000000@amazonses.com designates 54.240.9.36 as permitted sender) client-ip=54.240.9.36;
Authentication-Results: mx.google.com;
spf=pass (google.com: domain of 0000014336427473-56f357d5-7b40-4e58-921b-fa7bb0b86df0-000000@amazonses.com designates 54.240.9.36 as permitted sender) smtp.mail=0000014336427473-56f357d5-7b40-4e58-921b-fa7bb0b86df0-000000@amazonses.com
Return-Path: 0000014336427473-56f357d5-7b40-4e58-921b-fa7bb0b86df0-000000@amazonses.com

I think the issue is the message body says From: auth@arduino.cc, but the header indicates the SMTP FROM was @amazonses.com. I think if the hosting server SMTP configuration is updated to send a “mail from: auth@arduino.cc” it won’t get flagged as spam by GMail.