The most reliable Slack statistics trace back to Salesforce, which closed fiscal 2026 with Q4 revenue of $11.2 billion, up 12% year-over-year, according to Salesforce’s earnings release. The segment that now houses Slack, “Agentforce 360 Platform, Slack and Other,” contributed $2.655 billion in the quarter. Per Salesforce CEO Marc Benioff, Slack’s revenue is expected to hit approximately $3 billion in fiscal 2026, a figure no longer broken out as a standalone line in segment reporting. The result, per Statista, is that Slack holds approximately 13% of the enterprise messaging market against Microsoft Teams’ approximately 37%, and per Okta’s 2025 Businesses at Work report, 40% of Okta’s enterprise client base licenses Slack.
The interesting story isn’t the revenue. It’s the structural shift underneath: starting summer 2026, every new Salesforce customer receives Slack auto-provisioned by default, with Slackbot positioned as the daily AI interface for the platform. Microsoft Teams, Slack’s primary competitor, and Okta, the identity provider tracking enterprise app licensing, both reflect the changing dynamics in their 2026 disclosures.
Key Takeaways
- According to Statista, Slack holds an estimated approximately 13% share of the enterprise messaging market against Microsoft Teams’ approximately 37% per Statista enterprise messaging data.
- According to Salesforce, nearly 80% of Fortune 100 companies rely on Slack Connect per Slack Connect adoption data.
- According to Okta, 40% of Okta’s enterprise client base licenses Slack per the 2025 Businesses at Work report.
- Slackbot is on track to become the fastest-adopted product in Salesforce’s 27-year history, with up to 96% user satisfaction among 85,000+ Salesforce employees using it internally.
- The Slack App Directory now lists more than 2,600 apps and integrations in the Slack Marketplace, per the Slack integrations page.
- More than 100,000 organizations use Slack Connect for cross-company collaboration.
- Salesforce’s free cash flow for fiscal 2026 reached $14.4 billion, up 16% year-over-year, the financial backbone funding Slack’s AI rebuild.
Editor’s Choice
- Slack reached more than 10 million daily active users in its last officially confirmed milestone, with the post noting more than 85,000 paid customers at that time.
- The Agentforce 360 Platform, Slack, and Other segment posted full-year fiscal 2026 revenue of $8.882 billion (including $388 million from Informatica).
- Salesforce ended fiscal 2026 with a Current Remaining Performance Obligation of $35.1 billion, up 16% year-over-year.
- Marc Benioff reported Agentforce ARR reached $800 million, up 169% year-over-year, with 29,000 deals closed (up 50% quarter-over-quarter).
- Salesforce disclosed 2.4 billion agentic work units delivered to date across Agentforce and Slack.
- Slack’s own 2019 baseline showed 65 of the Fortune 100 using the platform, rising to nearly 80% of the Fortune 100 relying on Slack Connect specifically by 2025.
Recent Developments
- February 25, 2026: Salesforce posted Q4 FY26 revenue of $11.2 billion, up 12% year-over-year, its strongest quarter on record.
- March 31, 2026: Salesforce announced 30 new AI features for Slack, the most ambitious update since the Salesforce acquisition.
- April 1, 2026: Marc Benioff stated Slack revenue is expected to hit approximately $3 billion in fiscal 2026 during investor remarks.
- Summer 2026: Beginning this summer, Slack will be automatically provisioned, connected, and ready for all new Salesforce customers, AI-powered and Salesforce-aware from day one.
- March 2025: Okta’s Businesses at Work 2025 report showed 40% of Okta clients license Slack, with Slack ranking among the top collaboration apps.
- May 2026: The Slack App Directory still surfaces top integrations with Salesforce, Asana, Zoom, HubSpot, GitHub, and Notion, with two-way data sync for the major ones.
Slack Statistics on Daily Active Users and Engagement
- Slack’s last publicly confirmed daily-active-user milestone, posted on the company’s own newsroom, set the floor for every subsequent estimate.
- Slack announced more than 10 million daily active users around the world, adding that more than half of Slack’s DAUs are outside of the United States, in 150-plus countries.
- Third-party 2026 aggregator estimates hover in the 47-million range, but those are estimates rather than Slack-confirmed figures.
- Mobile remains a meaningful access point for Slack’s user base, with engagement extending beyond desktop sessions into commutes and after-hours channel checks via mobile devices.
- For broader Google usage statistics as an ecosystem comparator, workplace messaging tracks separately from search-driven engagement.
| Metric | Value | Date | Source |
|---|---|---|---|
| Confirmed DAU (Slack-published) | 10 million+ | January 29, 2019 | Slack newsroom |
| Paid customers (Slack-published) | 85,000+ | January 29, 2019 | Slack newsroom |
| Countries with Slack DAUs | 150+ | January 29, 2019 | Slack newsroom |
| App directory size | 2,600+ | May 2026 | Slack Marketplace |
| Salesforce employees using Slackbot | 85,000+ | March 31, 2026 | Salesforce |
Source: Slack newsroom announcements and Salesforce product pages, captured May 2026.
How many people use Slack daily?
Slack’s last self-reported figure is more than 10 million daily active users, announced in January 2019. Salesforce no longer publishes a standalone Slack DAU number; 2026 third-party estimates are aggregator approximations, not company-confirmed metrics.
Slack Statistics on Revenue and Salesforce Segment Performance
- Salesforce restructured its segment reporting in fiscal 2026, folding Slack into a combined unit called “Agentforce 360 Platform, Slack and Other.” The segment posted quarterly revenue of $2.655 billion in Q4 FY26 and $8.882 billion for the full fiscal year.
- Slack-specific revenue is no longer broken out in the 10-Q, though Marc Benioff has stated that Slack revenue is expected to hit approximately $3 billion in fiscal 2026.
- At the parent-company level, Salesforce reported Q4 FY26 subscription and support revenue of $10.7 billion, up 13% year-over-year, with full-year fiscal 2026 revenue of $41.5 billion, up 10% year-over-year.
| Metric | Q4 FY26 | Full Year FY26 | YoY Growth |
|---|---|---|---|
| Total revenue | $11.2 billion | $41.5 billion | 12% Q4, 10% FY |
| Subscription and support | $10.7 billion | n/a | 13% Q4 |
| Agentforce 360 + Slack + Other segment | $2.655 billion | $8.882 billion | 38% Q4 |
| Free cash flow | n/a | $14.4 billion | 16% FY |
| CRPO | $35.1 billion | $35.1 billion | 16% |
| Total RPO | $72.4 billion | $72.4 billion | 14% |
Source: Salesforce FY26 Q4 earnings press release, February 25, 2026.
What is Slack’s revenue under Salesforce?
Slack’s own revenue is no longer disclosed as a standalone line. The “Agentforce 360 Platform, Slack and Other” segment reported $8.882 billion for fiscal 2026 (including $388 million from Informatica). Marc Benioff has separately stated that Slack-specific revenue is expected to hit approximately $3 billion in fiscal 2026, the most recent CEO-level standalone figure publicly available.
Slack Statistics on Market Share vs Microsoft Teams
- The enterprise messaging market shows a structural gap between Slack and Microsoft Teams that has held steady for two consecutive years.
- Salesforce’s broader productivity ecosystem also competes against Microsoft 365 on seat economics, not just on Teams alone.
- Statista’s 2026 enterprise messaging figures place Microsoft Teams at approximately 37% market share and Slack at approximately 13%.
- In the broader unified communications categorization, Microsoft Teams holds roughly 48% share, while Zoom holds 42%, Slack 8%, and Google Meet 6%.
- The DAU comparison is even more lopsided on paper.
- Microsoft has publicly disclosed that Teams reached 320 million daily active users in 2026, up from 260 million in 2025, a 23% year-over-year increase.
- The meaningful comparison is paid-seat share, not headline DAUs, since Teams ships bundled with Microsoft 365 to seats that may never use it.
By the numbers: Microsoft Teams holds approximately 37% of the enterprise messaging market while Slack holds approximately 13%, per Statista 2026 data. The gap has remained roughly stable for two years, suggesting Slack’s share now reflects a defensible floor rather than a transitional position.
How does Slack compare to Microsoft Teams in market share?
Statista’s 2026 enterprise messaging breakdown puts Microsoft Teams at approximately 37% and Slack at approximately 13%. Teams benefits from Microsoft 365 bundling, while Slack retains strength in tech-startup, marketing, and design segments where workflow-integration depth matters more than seat-price economics. The gap is structural rather than transitional.
Slack Statistics on Enterprise Adoption and Fortune 100 Penetration
- In 2019, 65 of the Fortune 100 used Slack.
- By 2025, the Slack/Salesforce blog reported that nearly 80% of Fortune 100 companies rely on Slack Connect specifically.
- In Okta’s 2025 Businesses at Work report, 40% of Okta clients license Slack, and Slack ranks among the top collaboration applications that have replaced former top-ranked apps like Box, Dropbox, and SAP Concur.
What percentage of Fortune 500 companies use Slack?
Slack’s own figures focus on the Fortune 100 rather than the Fortune 500. Nearly 80% of Fortune 100 companies rely on Slack Connect specifically. Fortune 500 paid penetration is not officially disclosed; the lower Fortune 500 tier remains an open seat-growth runway for the summer 2026 auto-provisioning play.
Slack Statistics on Slack Connect Market Size and Cross-Organization Collaboration
- Slack Connect is the cross-organization channel feature that competing platforms have struggled to match at the same scale.
- The 2025 blog post on Fortune 100 adoption disclosed that more than 100,000 organizations use Slack Connect to collaborate with partners, vendors, and customers.
- The platform supports up to 250 organizations collaborating in one channel, and Slack reports that 83% of users believe losing access to working with partners in Slack Connect would negatively affect their ability to get work done.
Key finding: Slack Connect counts more than 100,000 organizations and supports up to 250 organizations in a single channel, with 83% of users saying losing Slack Connect would negatively affect their work. This stickiness is the moat Microsoft Teams has not yet replicated at scale in external-collaboration use cases.
How many companies use Slack Connect?
More than 100,000 organizations use Slack Connect for cross-company collaboration, with nearly 80% of the Fortune 100 relying on the feature. Each Slack Connect channel can host up to 250 organizations, a capacity ceiling that’s relevant for supply-chain and consortium-style workflows.
Slack Statistics on the App Directory and Integration Ecosystem
- Slack offers more than 2,600 apps and integrations in the Slack Marketplace, with top integrations including Salesforce, Asana, Zoom, HubSpot, GitHub, and Notion, all featuring two-way data sync.
- For historical context, Slack’s 2019 directory carried more than 1,500 apps, with thousands more developed by customers for internal use.
- The directory has expanded substantially, compounding Slack’s switching costs for any enterprise that has invested in workflow integrations.
Slack Statistics on Slackbot and AI Adoption Velocity
- Salesforce has reframed Slackbot as the company’s flagship agentic-AI interface, with internal-adoption metrics that set a new bar for enterprise-AI rollout.
- According to Salesforce’s product page, Slackbot is on track to become the fastest-adopted product in Salesforce’s 27-year history, with customers reporting savings of up to 90 minutes per day and more than 85,000 Salesforce employees using Slackbot internally, saving up to 20 hours per week with 96% user satisfaction.
- The March 2026 product update added 30 new AI features, framed as the most ambitious Slack update since the Salesforce acquisition.
- The update transforms Slackbot from a conversational assistant into a full-spectrum enterprise agent that can take meeting notes across any video provider, operate outside the Slack application on users’ desktops, execute tasks through third-party tools via the Model Context Protocol (MCP), and serve as a lightweight CRM for small businesses.
- Customers cited in Salesforce’s Slackbot case studies include Anthropic, Wayfair, Asymbl, Engine, and reMarkable.
- The agentic-AI direction parallels what OpenAI’s enterprise expansion is doing on the model-vendor side.
- A 96% satisfaction figure is only credible when paired with a low-friction default.
| Metric | Value | Source |
|---|---|---|
| Slackbot user satisfaction | 96% | Salesforce |
| Reported daily time savings | Up to 90 minutes | Salesforce |
| Reported weekly time savings (internal) | Up to 20 hours | Salesforce |
| Salesforce employees using Slackbot | 85,000+ | Salesforce |
| AI features added (March 2026) | 30 | TechCrunch |
Source: Salesforce Slackbot product page and TechCrunch coverage of the March 31, 2026 announcement.
Slack Statistics on Workforce, Headcount, and Salesforce Distribution
- Slack-specific employee headcount is no longer reported separately by Salesforce.
- The most relevant headcount data point for Slack’s distribution is internal: more than 85,000 Salesforce employees use Slackbot, which approximates Salesforce’s own workforce post-Informatica integration.
- The structural change from summer 2026 is that, beginning this summer, Slack will be automatically provisioned, connected, and ready for all new Salesforce customers, AI-powered and Salesforce-aware from day one.
- This shifts Slack’s seat-growth model from sales-led land-and-expand into bundled-distribution by default, a meaningful change to the unit economics of customer acquisition for a workplace messaging platform.
| Metric | Value | Source |
|---|---|---|
| Salesforce employees using Slack/Slackbot | 85,000+ | Salesforce |
| Salesforce full-year FY26 revenue | $41.5 billion | Salesforce IR |
| Agentforce 360 + Slack segment FY26 | $8.882 billion | Salesforce IR |
| Standalone Slack employee count | Not separately disclosed | n/a |
Source: Salesforce FY26 Q4 earnings and Salesforce Slackbot product page, 2026.
Conclusion
Slack with a Marc Benioff-disclosed revenue figure of approximately $3 billion, an approximately 13% enterprise messaging market share against Microsoft Teams’ approximately 37%, and nearly 80% Fortune 100 reliance on Slack Connect. The 2026 chapter for Slack centers on three structural shifts: summer 2026 auto-provisioning, Slackbot agentic-AI velocity, and a Slack Connect moat with high user stickiness.
For analysts citing Slack data, the most defensible figures remain those Slack and Salesforce publish themselves; third-party DAU estimates carry an estimate qualifier.
