Cloud printing application programming interface (API) company Lob this week said it has raised $7 million in venture capital financing.

The Series A financing round was led by Polaris Partners, First Round Capital and Floodgate, with participation from other individual investors. These additional funds follow a $2.4 million seed round in November 2013 and bring Lob’s total financing to date to $9.4 million.

Leore Avidar and Harry Zhang co-founded the company to develop  asuite of print and mail APIs for developers and businesses. Lob’s portfolio offers a range of print products, base infrastructure and tools.

As part of the funding, Pat Kinsel, a partner at Polaris Partners, will take a seat on the company’s board of directors.

“To leverage print, developers need a highly scalable solution that works everywhere,” he said in a statement. “By offering a developer friendly, pay-as-you-go service, Lob has helped developers realize print is an important and easily achievable part of their application or service.”

The company said it has acquired more than 3,500 customers since its launch in 2013. Its customers include Intuit, Porch and Ubiquiti Networks.

Follow CJ Arlotta on Twitter @cjarlotta and Google+ for further updates on the story above — or if you just want to say hello.