I have two thoughts. One is the zip code and the mail brought by a letter carrier.
My second thought is that the 2 words are Post Office which is full of letters (mail)
 

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News, deals, games, and bargains for Americans over 60. From everyday expenses like groceries and eating out, to electronics, fashion and travel, The GrayVine is all about helping you make your money go further.

The GrayVine

The GrayVine searches for the best deals, discounts, and bargains for over 60's. From everyday expenses like groceries and eating out, to electronics, fashion and travel, we're all about helping you make your money go further.
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