# Customer.io

Customer.io is a customer engagement platform for creating personalized journeys across email, push, SMS, and in-app messaging. It uses customer data to trigger and personalize messages, with a visual workflow builder, data-driven audience segmentation, and an AI Agent that builds automations from a prompt. It connects to data sources and destinations through integrations, APIs, webhooks, and an MCP server for AI tools.

Page: https://slateindex.ai/brand/customer-io · data of 2026-11-02

## Facts

- Founded: 2012
- Headquarters: Portland, Oregon, USA
- Employees: 201–500
- Company type: Private, venture-backed
- Latest funding: Series A led by Spectrum Equity
- Deployment: Cloud-hosted, with US and EU data centers
- Best for: Teams getting started with data-driven messaging, and teams scaling across channels with custom workflows.
- Compliance: GDPR, CCPA, ISO 27001, SOC 2 Type II, HIPAA

## Products

- Journeys: Automated campaigns with a visual workflow builder that improve with every send.
- Audiences: Data-driven segmentation to reach the right people.
- Data & integrations: Customer data used for personalization, with reverse ETL, data index and connected forms.
- Design Studio: Drag-and-drop and code editor for creating messages at scale.
- Analytics: Campaign reporting, dashboards, A/B testing and conversion tracking.
- AI Agent: Builds automations in a conversation and analyzes campaign performance.

## Rankings

| Category | Rank | Visibility | Mentions |
|---|---|---|---|
| Marketing Automation | 8 of 46 | 12.2 | 23 |
| Email Marketing | 16 of 55 | 6.2 | 10 |

## By engine

| Engine | Visibility | Mention rate |
|---|---|---|
| chatgpt | 13.3 | 37.0% |
| google_ai_mode | 4.4 | 7.4% |
| perplexity | 18.9 | 40.7% |

## Definitions

- Visibility (0–100): how often and how high AI answers name the brand, weighted by position.
- Mention rate: share of collected AI answers that name the brand.
- Share of voice: the brand's mentions as a share of all brand mentions in the category.
- Citation authority: share of answers naming the brand that cite the brand's own site.

Cite as: SlateIndex, “Customer.io AI visibility profile”, https://slateindex.ai/brand/customer-io, data of 2026-11-02. Licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).