You are cordially invited to congratulate Paperless Post on its new $25M funding round

Whoever said manners and courtesy were dead, clearly didn’t know about Paperless Post and its little invitations and cards empire.

Tonight, the company confirmed that it has raised $25 million in a third round of institutional funding. August Capital led the round, and some existing investors also chipped in.

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The new funding will be used toward “accelerating development of online and mobile products to deepen engagement with their growing base of 45 million users,” the company said in an official statement to VentureBeat.

Born in 2008, Paperless Post was the brainchild of a brother and sister who wanted to bring the old-school tradition of personalized invitations, announcements, and greetings to the current age of digital communications — basically, gorgeous and customizable cards send over the Internet.

It also offers paper cards and stationary, just as beautifully designed and customized as the digital ones.

“Paperless Post lets you communicate beautifully, conveniently, and privately about the social experiences you care about,” said chief executive and cofounder James Hirschfeld.

“Our goal is to become the new protocol for valued social communication, regardless of the medium you choose. We’ve always been a very capital-efficient company with strong organic growth. Adding this cash to our balance sheet will help us realize this vision faster for a greater number of people in the U.S. and abroad.”

The company also shared that it has sent over 100 million invitations and other communications since launch and that its user base doubled in 2013 for the second year in a row.

Recently, Paperless Post has also been partnering up with various designers seeking to extend their brands into the stationary market, including Oscar de la Renta, Jonathan Adler, and Kate Spade New York.

And while other digital cards and communications service exist (Someecards.com, anyone?) and people have plenty of other ways to interact with loved ones (from social media to messaging apps and everything in between), the company certainly seems committed to making its mark on how people communicate these days.

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Paperless post is based in New York City, and this latest round brings it total funding to $37.4 million.

(h/t to TC)