Head-to-head
1CRM vs Customer.io
Two leading email marketing tools, compared on pricing, features, and editorial fit. Updated for 2026.
At a glance
| 1CRM | Customer.io | |
|---|---|---|
| Tagline | Open-source CRM for sales, marketing, and customer service | Messaging that actually fits your data. |
| Pricing model | Paid | Paid |
| Starts at | Not listed | $100/mo |
| Founded | — | 2012 |
| AI-native | ||
| Categories | Marketing Project Management, Email Marketing, CRM | Email Marketing, Automation |
| Vendor claimed |
Quick take
Pick 1CRM if you need open-source crm for sales, marketing, and customer service. Pick Customer.io if you need messaging that actually fits your data.
Browse more
1CRM alternatives →
Browse more
Customer.io alternatives →
Frequently asked
- Is 1CRM better than Customer.io?
- It depends on your use case. 1CRM is open-source crm for sales, marketing, and customer service, 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 1CRM and Customer.io?
- 1CRM doesn't publish its pricing. Customer.io starts at $100/mo.
- Can I migrate from 1CRM 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.