What else does Customer.io use?

Amazon Web Services, Google Cloud, Infobip, Mailgun and OpenAI, among 17 vendors we hold evidence for.

Which other companies use Anthropic?

15Five, 1K4.AI, 1mind AI, 247 Profits and 360DT, among 2,890 companies with public evidence.

Companies / Customer.io / Anthropic

Does Customer.io use Anthropic?

Q: Does Customer.io use Anthropic?

Yes. We hold strong evidence for this. Evidence: Subprocessor list.

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

Subprocessor listNamed as Anthropic (Claude)Processes data for the company10 Nov 2026Source

About Customer.io

Customer.io is a customer engagement platform that unifies customer data, messaging, and AI. It serves brands that use it to send personalized messages across channels.

Summarized from its homepage on 3 Nov 2026.

Marketing

What else Customer.io uses

Customer.io has evidence for 17 vendors. The strongest:

Amazon Web Services Google Cloud Infobip Mailgun OpenAI Snowflake Twilio Cloudflare Google Tag Manager

See the full Customer.io tech stack

Other companies using Anthropic

15Five15five.com

1K4.AI

1mind AI1mind.com

247 Profits247profits.org

360DT360dt.de

360REV360rev.com

365agents365agents.com

37signals37signals.com

All 2,890 companies using Anthropic

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