Communications API platform Nylas has raised $120 million in Series C funding, bringing its total financing to $175 million.

The company provides email, scheduling and work automation tools for developers and enterprises.

The round was led by Tiger Global Management with participation from existing investors Citi Ventures, Slack Fund, 8VC, Round13 Capital, ScaleUP Ventures, Scale Asia Ventures, Tony Fadell, founder of Nest and Principal at Future Shape, and new investors Owl Rock Capital, a division of Blue Owl, Blue Cloud Ventures. 

In addition, there were  individual contributions from Patrick Collison, CEO and co-founder of Stripe, and his brother John Collison, President and Co-Founder of Stripe, and Sebastian Siemiatkowski, CEO of Klarna.

John Curtius, partner at Tiger Global, will join the Nylas board.

Nylas seeks to help developers “the tools needed to meet customer and market needs faster, create competitive differentiation through powerful and customized customer experiences, and generate huge operational savings through more productive, secure, and intelligently-automated development cycles,” says Gleb Polyakov, co-founder and CEO, Nylas. 

The firm will use the funds to build its engineering, customer support and go-to-market teams, and scale its developer experience, among other things.