Sonian raises an additional $8m to upgrade its cloud-powered e-mail archiving platform

Sonian Inc., a Dedham company specializing in cloud-powered e-mail archiving, said Monday that has secured an additional $8 million in funding from existing investors OpenView Venture Partners, Summerhill Venture Partners, and Prism Venture Partners.

That amount brings the total raised in the Series C funding round to $21.6 million. To date, Sonian has raised $37.6 million.

These new funds will be used to develop Sonian’s next-generation DiscoverStor platform, the company said.

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“Sonian is well poised to continue its remarkable growth trajectory, thanks to our innovative approach and long-standing expertise moving corporate data to a secure cloud archive and illuminating that data with fast and accurate search,” Sonian chief executive Jeff Dickerson said in a statement. “We have a lofty goal to take all human-generated data, from e-mails and documents to CAD drawings and beyond, and make it searchable – and therefore actionable – within a cloud architecture. The continued support from our investment and reseller partners will hasten our ability to deliver on this vision and create the world’s first true dedicated information discovery cloud.”