Companies using Slack.
Reach every one of them.
Find and reach companies that use Slack. Filter Slack users by industry, company size, geography, and the rest of their tech stack, then get verified emails for IT Directors and People Ops.
No credit card required · 10,000 free credits monthly
Target Slack users precisely
Build a list of Slack companies filtered by industry, size, geography, and co-installed tools
Verified Slack detection
Sendburg tracks 14,000+ technologies and identifies companies running Slack through multi-source signals.
Combine tech filters
Find companies using Slack together with any other tool in your stack — or that use Slack but not Microsoft Teams.
Verified work emails
Multi-source validated emails for contacts at Slack user companies, with an automatic credit refund on any undeliverable result.
Size & industry filters
Target Slack users in specific industries, company sizes, and geographies to match your ICP exactly.
Slack buying signals
Spot companies hiring for Slack, expanding usage, or adding related tools — timely signals for adjacent products.
Decision-maker contacts
Reach IT Directors and People Ops — the people who evaluate and buy collaboration-adjacent products.
Frequently asked questions
How does Sendburg identify companies using Slack?
Sendburg detects technology adoption through multi-source signals including website technology detection, job postings, vendor data, and public records — then verifies contacts at those companies.
Can I filter Slack users by industry and company size?
Yes. Narrow Slack users by industry, company size, revenue, funding stage, geography, and additional technologies with 50+ filters.
What job titles should I target at Slack companies?
IT Directors and People Ops are the key roles at Slack shops, plus any decision-makers relevant to your offering.
Can I find companies that use Slack and Microsoft Teams?
Yes. Sendburg lets you combine technology filters, so you can find companies running Slack, Microsoft Teams, or any combination of tools at once.
Start free today
10,000 free credits every month. No credit card. No annual contract.
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