Head-to-head
ContactOut vs Customer.io
Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.
At a glance
| ContactOut | Customer.io | |
|---|---|---|
| Tagline | Find verified emails and phone numbers for professionals | Messaging that actually fits your data. |
| Pricing model | Enterprise | Paid |
| Starts at | Custom | $100/mo |
| Founded | — | 2012 |
| AI-native | ||
| Categories | Lead Gen & ABM, Sales Engagement, Email Marketing | Email Marketing, Automation |
| Vendor claimed |
Quick take
Pick ContactOut if you need find verified emails and phone numbers for professionals. Pick Customer.io if you need messaging that actually fits your data.
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ContactOut alternatives →
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Customer.io alternatives →
Frequently asked
- Is ContactOut better than Customer.io?
- It depends on your use case. ContactOut is find verified emails and phone numbers for professionals, while Customer.io is messaging that actually fits your data. See the comparison above for which fits your team.
- What's the price difference between ContactOut and Customer.io?
- ContactOut uses custom pricing. Customer.io starts at $100/mo.
- Can I migrate from ContactOut to Customer.io?
- Most tools in this category support data import via CSV. For complex migrations, both vendors offer onboarding assistance on higher-tier plans.