Insights

Expansion Trajectory Customer.io demonstrates strong revenue growth trajectory from early ARR milestones to a reported 100M+ revenue by 2025, indicating a expanding customer base and increasing potential for cross sells to mid-market and enterprise segments.

Data-Driven Engagement The platform emphasizes unified messaging across multiple channels with real-time data and unlimited profile attributes, presenting opportunities to upsell advanced analytics, segmentation, and personalized journey capabilities to larger teams investing in customer experience.

Tech Stack Synergy Existing integrations with popular tools (Twilio, QuickBooks, Facebook Pixel, Sanity) can be leveraged to position add-on modules or complementary services that integrate with customers' current ecosystems, reducing time-to-value.

Security Alert A noted security breach incident linked to a third-party contractor highlights a need for reinforced security features, compliance offerings, and risk management services as potential differentiators for risk-averse enterprises.

Partnership Momentum Recent partner collaboration with Yodel Mobile signals openness to channel and strategic partnerships, suggesting sales opportunities through partners, co-marketing, and referral programs to scale reach in key markets.

Similar companies to Customer.io

Customer.io Tech Stack

Customer.io uses 8 technology products and services including Optimizely, Reddit Ads, Mixpanel, and more. Explore Customer.io's tech stack below.

Customer.io's Email Address Formats

Customer.io uses at least 4 email formats:
Customer.io Email FormatsExamplePercentage
First@customer.ioJohn@customer.io
77%
Last@customer.ioDoe@customer.io
15%
FirstL@customer.ioJohnD@customer.io
6%
First.L@customer.ioJohn.D@customer.io
2%

Frequently Asked Questions

What is Customer.io's phone number?

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You can contact Customer.io's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Customer.io's official website and social media links?

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Customer.io's official website is customer.io and has social profiles on LinkedIn and Crunchbase.

How much revenue does Customer.io generate?

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As of August 2026, Customer.io's annual revenue is estimated to be $100M - $250M.

What is Customer.io's NAICS code?

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Customer.io's NAICS code is 5112 - Software Publishers.

How many employees does Customer.io have currently?

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As of August 2026, Customer.io has approximately 573 employees across 6 continents, including North America, Europe and Asia. Key team members include Chief Technology Officer: M. N., Head Of Data & Analytics: M. G. and Head Of Platform: T. B. Explore Customer.io's employee directory with LeadIQ.

What industry does Customer.io belong to?

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Customer.io operates in the Software Development industry.

What technology does Customer.io use?

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Customer.io's tech stack includes Optimizely, Reddit Ads, Mixpanel, Amazon Web Services, Google Workspace, ChatGPT, LiveChat and Zoom.

What is Customer.io's email format?

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Customer.io's email format typically follows the pattern of First@customer.io. Find more Customer.io email formats with LeadIQ.

How much funding has Customer.io raised to date?

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As of August 2026, Customer.io has raised $10M in funding. The last funding round occurred on Mar 08, 2022.

When was Customer.io founded?

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Customer.io was founded in 2012.
Customer.io logo

Customer.io

Software DevelopmentOregon, United States501-1000 Employees

Customer.io is a software development company based in Portland, Oregon 97210, United States, with 501 to 1000 employees. It offers a customer engagement platform that enables personalized journeys across mobile and web, using channels such as email, in‑app messages, SMS, and push notifications. The platform is designed to centralize messaging, integrate with common tools, and support real-time data movement to enable campaigns with unlimited profile attributes, events, or actions. The company maintains a diverse technology stack that includes Airbase, Facebook Pixel, Sigma Computing, Sanity.io, Zapier, dc.js, UNIX, and CSS. Public updates describe partnerships and integrations with various partners, including a 2024 integration with Vision Pro and with Twilio for SMS, a 2026 partnership with Yodel Mobile, and a January 2025 security incident linked to an OpenSea email vendor contractor.

Section iconCompany Overview

Phone number
NAICS Code
5112 - Software Publishers
Founded
2012
Employees
501-1000

Section iconFunding & Financials

  • $10M

    Customer.io has raised a total of $10M of funding over 7 rounds. Their latest funding round was raised on Mar 08, 2022 as a Series A.

  • $100M - $250M

    Customer.io's revenue is estimated to be in the range of $100M - $250M

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