Rsvp Code Rsvp Code. I have gotten a lot of those offers from amex for the platinum and prg. The blue cash rsvp code is 14 characters: Amex EveryDay Credit Card Guide, Info, and Review from This code is 8 characters in length and is located at the bottom of the total visa card promotional offer. Your rsvp code is a unique code to be used to respond to your special mail offer. Get a decision in as little as 30 seconds

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