The company confirmed the news and said that Khosla Ventures and RRE Ventures led the round.
Xobni makes email more useful with fast search; showing your contacts’ Facebook, LinkedIn, and Hoover’s profiles; revealing past attachments from a contact; and more. Its main product is a plug-in for Microsoft’s popular email program Outlook, but it also recently launched integration with the native email application on BlackBerry smartphones.
The company previously raised more than $15 million in funding, including a $1 million addition late last year to its second round. Past investors include incubator Y Combinator, Khosla Ventures, Cisco Systems, First Round Capital, Baseline Ventures, Atomico Investments, and BlackBerry Partners Fund.
The filing listed Will Porteous of RRE Ventures as a new director. It also says Xobni has raised $11.3 million in this round so far.