Companies / Signable / Castle.io
Does Signable use Castle.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.
How we know
About Signable
Signable provides electronic signature software for sending, signing, and tracking documents. It serves businesses across industries such as real estate, education, and finance.
Summarized from its homepage on 4 Nov 2026.
What else Signable uses
Signable has evidence for 20 vendors. The strongest:
HubSpot
Amazon Web Services
ChatGPT
Datadog
Google Analytics
Help Scout
Hevo
LinkedIn
Meta
Other companies using Castle.io
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