Companies / Custos AI / Lettermint B.V.
Does Custos AI use Lettermint B.V.?
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 Custos AI
Custos reads business emails, looks up information in a company's existing systems, takes actions like drafting quotes or creating orders, and replies. It serves European businesses that use Microsoft 365 or Google Workspace mailboxes along with tools such as Shopify, Picqer, or Moneybird.
Summarized from its homepage on 8 Nov 2026.
What else Custos AI uses
Custos AI has evidence for 11 vendors. The strongest:
Other companies using Lettermint B.V.
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See Custos 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