If you usually send out holiday cards, but are concerned about the carbon footprint of sending hundreds of letters through the mail — or are just too lazy this year — you’ll be happy to know the National Parks Conservation Association has you covered.

The nonprofit organization is offering ten images of National Parks with various holiday themed messages for free email holiday cards. You should be able to find one or two to float your holiday boat this year … and just think of all the money you’ll save on postage!

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Via Trailspace.

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