Does InboxPro 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 InboxPro
InboxPro provides an AI email assistant, follow-up sequences, email tracking, templates, and a built-in calendar for Gmail users. It serves people and teams who use email to acquire and nurture clients and close deals.
Summarized from its homepage on 11 Nov 2026.
What else InboxPro uses
InboxPro has evidence for 11 vendors. The strongest:
Amazon Web Services
Google Gsuite
Help Scout
Mongo Atlas
Typeform
Cloudflare
Google Analytics
Google Workspace
Vercel
Other companies using Slack
Check any company's vendors in seconds
See InboxPro'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