Customer.io vs Emarsys
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Customer.io is the stronger AI pick in Marketing Automation: it has a visibility score of 12.2 versus 0.6 for Emarsys, and ranks ahead in 0% of the answers that name both.
Choose Customer.io if…
- You want the brand AI engines rank higher (12.2 vs 0.6)
- AI answers describe it more positively (34% vs 0% positive)
- You need GDPR or CCPA or ISO 27001 or HIPAA coverage
- Strong behavioral and event-driven automation
Choose Emarsys if…
- You need ISO 27001:2013 coverage
AI visibility side by side
Latest weekly run · Nov 2
| Metric | Customer.io | Emarsys |
|---|---|---|
| Visibility score | 12.2% | 0.6% |
| Change vs last week | New | New |
| Rank in Marketing Automation | #8 | #37 |
| Share of voice | 4% | 0.3% |
| Mentions this run | 23 | 2 |
| Positive in AI answers | 34% | 0% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Customer.io 0pp · Emarsys 0pp over 0 weekly runs.
Engine by engine
Customer.io leads on 3 of 3 engines
Head to head in AI answers
1 engine answers name both brands
| Prompt | Engine | Customer.io | Emarsys |
|---|---|---|---|
| Official website of the top marketing automation platform vendors | Perplexity | #9 | #8 |
Features, pricing & fit
| Dimension | Customer.io | Emarsys |
|---|---|---|
| Pricing model | Usage-based | — |
| Entry price | $100 / mo | — |
| Free plan | No | — |
| Deployment | Cloud-hosted, with US and EU data centers | — |
| Compliance | GDPR, CCPA, ISO 27001, SOC 2 Type II, HIPAA | ISO 27001:2013, SOC 2 Type II |
| Support | Email and chat support, Documentation and community support, Dedicated Customer Success Manager on Enterprise | — |
| Founded | 2012 | — |
| Headquarters | Portland, Oregon, USA | — |
| Employees | 201–500 | — |
| Funding | Series A led by Spectrum Equity | Series B · $55M raised |
| Best for | Teams getting started with data-driven messaging, and teams scaling across channels with custom workflows. | — |
Plans side by side
Customer.io
Emarsys
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
Customer.io
- Strong behavioral and event-driven automation
- Well suited to product-led SaaS companies
- Supports onboarding, activation and retention messaging
- Frequently shortlisted as a top marketing automation choice
Emarsys
Profile in progress.
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “Customer.io vs Emarsys”, https://slateindex.ai/compare/customer-io-vs-emarsys, data of Nov 2, 2026. Licence: CC BY 4.0.