5%
arrow_upward0% YoY
#4
Summary
- Customer.io ranks #4 within the Email Marketing category, maintaining its position month-over-month.
- As of May 2026, 5% of organizations who have a vendor in the Email Marketing category use Customer.io: up < 1 percentage points from last year.
- Customer.io has the highest adoption among enterprise companies (8%), compared to mid-market (6%), small-to-medium businesses (5%), and micro-SMB (5%).
- Customer.io key capabilities include behavioral trigger automation, multi-channel messaging, and real-time segmentation, supporting personalized lifecycle marketing for SaaS and ecommerce businesses.
Are businesses buying Customer.io?
Key stats
5%
arrow_upward0% YoY
Mid-Market, 40%
3%
9%
#5
#4
Adoption Rates by company size
| Company size | Adoption rate |
|---|---|
| SMB | 5% |
| Mid-market | 6% |
| Enterprise | 8% |
About Customer.io
Customer.io is an AI-powered customer engagement platform that enables data-driven messaging automation across email, SMS, push, and in-app channels. It helps teams personalize customer journeys using first-party data and event-based triggers.
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Have feedback?About this data
These insights come from Ramp’s procurement and renewal data, built on real-world transactions observed across our platform. Figures represent aggregated observations from Ramp Procurement and Renewals activity.
| Date | New adopter share | Competitor switch rate | Dominant FTE segment | Adoption rate (Enterprise) | Adoption rate (Mid-Market) | Adoption rate (SMB) |
|---|---|---|---|---|---|---|
| Apr 2026 | 3% | 9% | Mid-Market, 40% | 8% | 6% | 5% |
| Mar 2026 | 4% | 9% | Mid-Market, 40% | 9% | 6% | 5% |
| Feb 2026 | 5% | 10% | Mid-Market, 41% | 9% | 6% | 5% |
| Jan 2026 | 5% | 10% | Mid-Market, 43% | 8% | 6% | 5% |
| Dec 2025 | 3% | 10% | Mid-Market, 45% | 7% | 6% | 5% |
| Nov 2025 | 7% | 9% | Mid-Market, 46% | 7% | 6% | 5% |
| Oct 2025 | 8% | 9% | Mid-Market, 53% | 7% | 6% | 5% |
| Sep 2025 | 7% | 9% | Mid-Market, 53% | 4% | 6% | 5% |
| Aug 2025 | 9% | 10% | Mid-Market, 50% | 4% | 5% | 5% |
| Jul 2025 | 4% | 9% | Mid-Market, 52% | 5% | 5% | 5% |
| Jun 2025 | 4% | 10% | Mid-Market, 50% | 4% | 5% | 5% |
| May 2025 | 4% | 10% | Mid-Market, 51% | 4% | 5% | 5% |
| Apr 2025 | 2% | 10% | Mid-Market, 51% | 4% | 5% | 5% |
| Mar 2025 | 2% | 8% | Mid-Market, 48% | 5% | 6% | 5% |
| Feb 2025 | 1% | 8% | Mid-Market, 49% | 6% | 6% | 5% |
| Jan 2025 | 2% | 9% | Mid-Market, 46% | 6% | 6% | 6% |
| Dec 2024 | 3% | 9% | Mid-Market, 46% | 8% | 6% | 6% |
| Nov 2024 | 3% | 9% | Mid-Market, 46% | 9% | 6% | 6% |
| Oct 2024 | 3% | 9% | Mid-Market, 47% | 9% | 7% | 6% |
| Sep 2024 | 4% | 10% | Mid-Market, 46% | 10% | 7% | 6% |
| Aug 2024 | 4% | 10% | Mid-Market, 49% | 10% | 7% | 6% |
| Jul 2024 | 4% | 14% | Mid-Market, 48% | 9% | 8% | 6% |
| Jun 2024 | 3% | 9% | Mid-Market, 47% | 9% | 8% | 6% |
| May 2024 | 4% | 6% | Mid-Market, 49% | 10% | 8% | 7% |
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