Does Effy AI use Slack?
Yes
We hold strong evidence for this.
- The company names it in its own subprocessor list, a statement that this vendor handles its customers' data.
How we know
About Effy AI
Effy AI provides performance review and goals software, including 360° feedback, OKRs, and AI-generated review summaries. It serves companies of 30 to 1,000+ employees in software, financial services, healthcare, and other industries.
Summarized from its homepage on 9 Nov 2026.
What else Effy AI uses
Effy AI has evidence for 13 vendors. The strongest:
Google Workspace
Amazon Web Services
Atlassian
Datadog
Intercom
OpenAI
SendGrid
Zoom
Cloudflare
Other companies using Slack
Check any company's vendors in seconds
See Effy AI's full stack with a source for every vendor, and ask the same question about any company from the API, Claude or your browser.
- Every company and vendor, with its public source
- 100 API calls a month, plus MCP and the Chrome extension
- Work email only. No card, no sales call