Slack reports that it now has 2.7 million daily active users as it raises $200 million at a $3.8 billion post-money valuation, showing competitors in the collaboration tool game that it means business.

Thrive Capital led the funding round along with GGV and Comcast Ventures. Current investors of Slack such as Accel, Index Ventures and Social Capital also had a hand in it.

The company has now garnered a jaw-dropping $540 million worth of total funding.

"As has always been the case, we are taking this opportunity to further secure our leadership position as we continue to execute on our ambitious growth plans. This capital adds to our existing reserves and increases our ability to focus on an uncompromising long-term, strategic view," Stewart Butterfield, CEO of Slack, says.

Meanwhile, the daily active user base grew from 16,000 on Feb. 1, 2014, to 2.7 million with 800,000 paid seats on April 1, 2016. Compared to April last year's 750,000, it increased by about fourfold. Interestingly enough, notable corporate clients of Slack include LinkedIn, NASA and Spotify, to name a few.

Slack also has plans to roll out voice and video chat soon, potentially setting the collaboration tool up to go toe-to-toe with the likes of Skype, Google Hangouts and other similar apps. The company's Vice President of Product April Underwood revealed the 2016 product road map at Public Works in San Francisco during a customer conference.

It's also worth mentioning that Microsoft was set to pose an $8 billion bid to acquire Slack, but the idea didn't pan out when Bill Gates and Satya Nadella didn't like it, preferring to work on the company's own messaging platform Skype instead.

Slack's future is looking bright based on the figures. In other words, it now has the means to carry out highly rewarding steps to make it even more prominent than it is now.