Looks like the DMARC isn't configured properly. This past month or so, providers like Gmail require DMARC configuration for bulk senders
Received-SPF: pass (google.com: domain of 0100018dc4f86ecc-b7431cc0-5481-4746-9138-3527cee5f859-000000@amazonses.com designates 54.240.8.13 as permitted sender) client-ip=54.240.8.13;
Authentication-Results: mx.google.com;
dkim=pass [email protected] header.s=224i4yxa5dv7c2xz3womw6peuasteono header.b=emocRK7Q;
spf=pass (google.com: domain of 0100018dc4f86ecc-b7431cc0-5481-4746-9138-3527cee5f859-000000@amazonses.com designates 54.240.8.13 as permitted sender) smtp.mailfrom=0100018dc4f86ecc-b7431cc0-5481-4746-9138-3527cee5f859-000000@amazonses.com;
dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=svtperformance.com
Complying with DMARC authentication protocol in Amazon SES - Amazon Simple Email Service
Describes how to authenticate email with DMARC with Amazon SES.
docs.aws.amazon.com
Received-SPF: pass (google.com: domain of 0100018dc4f86ecc-b7431cc0-5481-4746-9138-3527cee5f859-000000@amazonses.com designates 54.240.8.13 as permitted sender) client-ip=54.240.8.13;
Authentication-Results: mx.google.com;
dkim=pass [email protected] header.s=224i4yxa5dv7c2xz3womw6peuasteono header.b=emocRK7Q;
spf=pass (google.com: domain of 0100018dc4f86ecc-b7431cc0-5481-4746-9138-3527cee5f859-000000@amazonses.com designates 54.240.8.13 as permitted sender) smtp.mailfrom=0100018dc4f86ecc-b7431cc0-5481-4746-9138-3527cee5f859-000000@amazonses.com;
dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=svtperformance.com