Here is the email message I used...
Hello,
I was instructed by NJ on Hyatt Concierge Twitter to email you screenshots of my Starwood SPG account Gold Status and recent SPG stays and you would upgrade my Hyatt Passport level to Diamond Membership within 2 business days.
Attached please find those screenshots.
My Hyatt Passport # xxxxxxxxxx
Thank you and I look forward to my future stays at Hyatt properties.
Sincerely,
After sending in the email above, to Goldpassport@hyatt.com, with the screenshots of my SPG GOLD STATUS and an SPG stay within the last year (I'm actually in a Westin ATM), here is the confirmation email I received upgrading my Hyatt Gold Passport (of which I just created online in response to this offer).
Dear Mr. SEDGE,
Thank you for contacting Hyatt Gold Passport; I appreciate the opportunity to assist you.
Congratulations! You have now been upgraded to our Diamond Tier status which is valid through February 2017. As a Diamond member, you will be instantly recognized as one of our valued guests at any Hyatt worldwide.
Diamond membership entitles you to a wide range of exclusive services and benefits. In order to continue to receive exclusive Diamond membership benefits, simply complete 25 stays or 50 nights at any Hyatt hotel or resort worldwide during the course of the calendar year.
We hope you enjoy the privileges of Diamond membership when staying at any Hyatt worldwide.
Best Regards,
Trupti Surve
Hyatt Gold Passport Representative
Global Contact Centre
www.hyatt.com