Companies / Hookdeck / Customer.io
Does Hookdeck use Customer.io?
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.
- The company's privacy policy names it as a processor, controller or partner.
How we know
About Hookdeck
Hookdeck provides infrastructure for receiving, sending, and testing webhooks and external events. It serves developers and engineering teams building event-driven applications.
Summarized from its homepage on 3 Nov 2026.
What else Hookdeck uses
Hookdeck has evidence for 19 vendors. The strongest:
Other companies using Customer.io
Check any company's vendors in seconds
See Hookdeck'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