Investor Profile: Slack Fund — Thesis, Cheque Size & How to Apply

Important context first: the Slack Fund brand is being sunset — the team now operates fully as Salesforce Ventures' early-stage arm. This profile covers the fund's history and how to engage the team today. Slack Fund was launched in 2015 as an $80 million fund (backed by Accel, Index Ventures and Kleiner Perkins alongside Slack) to invest in the future of work, followed by a $50 million Fund II (2020) and a $100 million Fund III (2022).

Thesis and sweet spot

The fund's thesis was early-stage investment in future-of-work software — team collaboration, productivity, workflow automation and the tools around the Slack platform. Crucially, there was "no Slack crossover required": the team backed great work software whether or not it integrated with Slack, and wrote cheques globally. Across its funds it made roughly 100 investments, with portfolio companies raising a combined $5.5 billion.

Fund I’s $80 million was raised with Accel, Andreessen Horowitz and Kleiner Perkins as co-investors — an unusually strong syndicate for a first-time corporate fund — and the fund’s ~100 investments went on to raise a combined $5.5 billion in follow-on capital.

Cheque size and fund

Fund I deployed $80 million (2015), Fund II $50 million (2020) and Fund III $100 million (2022) — the last announced as a doubling-down on the early-stage enterprise opportunity. With the brand sunset, future early-stage work-software investing runs through Salesforce Ventures.

Notable portfolio

Historic bets include 1Password, Lattice, Loom (seeded by the fund), Hightouch, Daily (daily.co), Hopin, WorkRamp and Crossbeam — a roster of category-defining work-software companies.

Partners

The fund has been led by Jason Spinell (Director/Head of Slack Fund, reachable at [email protected]), now operating within Salesforce Ventures.

Programs, credits and perks

Beyond capital, founders got investor introductions across the Slack/Salesforce ecosystem, Slack platform partnership opportunities and credits — benefits that now flow through Salesforce Ventures' platform team.

How to apply for funding

The old slack.com/fund page now redirects to Salesforce Ventures. Founders are invited to email [email protected] directly for early-stage work-software pitches — or engage Salesforce Ventures through its standard channels. Do not pitch a standalone Slack Fund; it no longer exists as a separate entity.