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  "markdown": "Co-founder, Customer.io.\n\n## What John builds\n\n- [Customer.io](https://www.anchorterminal.com/tools/customer-io.md), graded BB, 74.6/100, in Lifecycle marketing \u0026 customer engagement. Customer.io is a customer engagement platform that stores profiles and events, builds segments and sends automated email, SMS, push, in-app and WhatsApp messages. Agents reach it through REST APIs, a hosted MCP server and a command-line tool. Co-founder, Customer.io, researched 2026-10-28.\n\n## Works with\n\n- [Colin Nederkoorn](https://www.anchorterminal.com/people/colin-nederkoorn/), Founder and Chief Executive Officer, Customer.io\n- [Matthew Newhook](https://www.anchorterminal.com/people/matthew-newhook/), Chief Technology Officer, Customer.io\n\n## Backed by\n\n- [Spectrum Equity](https://www.anchorterminal.com/investors/spectrum-equity/)\n- [Oregon Venture Fund](https://www.anchorterminal.com/investors/oregon-venture-fund/)\n\n## Questions\n\n### Who is John Allison?\n\nJohn Allison is co-founder of Customer.io.\n\n### What does Peaberry Software, Inc. d/b/a Customer.io make?\n\nAnchor Terminal lists Customer.io from Peaberry Software, Inc. d/b/a Customer.io. Customer.io is a customer engagement platform that stores profiles and events, builds segments and sends automated email, SMS, push, in-app and WhatsApp messages. Agents reach it through REST APIs, a hosted MCP server and a command-line tool.\n\n### Who has invested in Peaberry Software, Inc. d/b/a Customer.io?\n\nThe sources our research read name Spectrum Equity and Oregon Venture Fund.\n\n### How are John's tools graded?\n\nCustomer.io is graded BB, 74.6 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://customer.io/about\n- https://customer.io/\n- https://customer.io/contact\n- https://customer.io/support\n\nThese are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.\n",
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