These Slack statistics highlight the latest official figures on paid customers, enterprise adoption, message volume, Slack Connect growth, marketplace scale, AI productivity claims, and historical milestones.
Slack says daily active users in 150+ countries send more than 4.7 billion messages each week.
The last public exact daily active user figure Slack disclosed was 10+ million in January 2019.
Slack’s paid customer base topped 85,000 in 2019, reached 156,000 in fiscal year 2021, and hit 169,000 in Q1 fiscal year 2022 before later rising above 200,000.
Slack Connect endpoints grew from more than 380,000 in Q2 fiscal year 2021 to more than 950,000 in Q1 fiscal year 2022.
Slack Marketplace now offers 2,600+ apps, up from 1,500+ apps in Slack’s directory in 2019.
Slack says pilot users of Slack AI saved an average of 97 minutes per week.
Slack says users spend 383 million minutes per week on huddles.
Salesforce agreed to acquire Slack for about $27.7 billion in December 2020 and completed the acquisition in July 2021.
Slack says Salesforce FY24 customer metrics show an average 36% employee productivity increase.
Slack says sales teams using Slack Connect have seen deal cycles move 4x faster.
Slack paid customer growth
Label
Bar
Value
2019
85,000+
FY2021
156,000+
Q1 FY2022
169,000+
2026 current
200,000+
Max = 200,000. Widths: 2019 42.50%, FY2021 78.00%, Q1 FY2022 84.50%, 2026 current 100.00%
Max = 2,600. Widths: 2019 directory 57.69%, 2026 marketplace 100.00%
Fortune 100 adoption
Label
Bar
Value
2019
65
2026 current
77
Max = 77. Widths: 2019 84.42%, 2026 current 100.00%
What these Slack statistics show
Slack’s public numbers show a platform that still has strong enterprise reach even without publishing a current exact daily active user count. The company’s disclosed paid customer total, Fortune 100 penetration, weekly message volume, and integration ecosystem all point to a product that remains deeply embedded in large organizations and broadly extensible through apps and external collaboration tools.
The historical data also shows how Slack scaled before and after the Salesforce deal. Paid customers expanded materially between 2019 and 2021, Slack Connect endpoints surged during the remote work period, and Slack’s positioning has shifted from workplace chat toward a wider work platform centered on search, automation, integrations, huddles, and AI-assisted productivity.
One useful caveat is that Slack no longer regularly discloses exact daily active user totals in the way it once did. That means current public analysis relies more heavily on adjacent indicators such as paid customers, weekly message volume, enterprise penetration, marketplace scale, and product usage metrics like huddles and AI time savings.
Sources
Slack About page
Slack blog: With 10+ million daily active users, Slack is where more work happens every day, all over the world
Slack blog: Slack Announces Strong Fourth Quarter and Fiscal Year 2021 Results
Slack blog: Slack Announces First Quarter Fiscal Year 2022 Results
Slack integrations page
Slack blog: Instant Messaging: Transforming How We Talk at Work
Slack AI product page
Slack blog: Businesses of all sizes are working smarter and faster with Slack AI
Salesforce press release: Salesforce Signs Definitive Agreement to Acquire Slack
Salesforce press release: Salesforce Completes Acquisition of Slack
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