Customer.io
Customer.io is a customer engagement platform founded in 2012 and headquartered in Portland, Oregon. The company focuses on helping tech-savvy marketers and organizations create personalized, data-driven customer journeys.
Company facts
| Founded | 2012 (14 years) |
| Latest funding | Series A |
| Employees | 420 |
| Headquarters | Portland, United States |
| Trusted networks on Proven | 81 investor, bank and government networks offer Customer.io to their members |
| Member offers on Proven | 1 |
| Member redemption clicks | 5,315 |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Discounts for Proven network members
Customer.io Startup · Up to $5,000 value
We're passionate about supporting startups because not too long ago, we were one. Eligible startups with under $10M in funding can get up to 12 months in our Startup Program
See Customer.io deals on Proven Deals
Members redeem through their investor or bank's Proven marketplace. Terms vary by network.
Competitors in Marketing automation & email
| Customer.io | Score in progress |
| Braze | Score in progress |
| Brevo (formerly Sendinblue) | Score in progress |
| Beefree | Score in progress |
| Constant Contact | Score in progress |
| Drift | Score in progress |
| CleverTap | Score in progress |
| Klaviyo | Score in progress |
| Sprout Social | Score in progress |
| Qualified.com, Inc. | Score in progress |
| beehiiv | Score in progress |
| Tofu | Score in progress |
| Attentive | Score in progress |
| Mixmax | Score in progress |
| Navattic | Score in progress |
| Wunderkind | Score in progress |
| Okara | Score in progress |
| Buffer | Score in progress |
| WebEngage | Score in progress |
| Acumbamail | Score in progress |
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.