Customer.io vs Retainful
| Customer.io | Retainful | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | $100/mo | $14/mo |
| Open source | No | No |
| Platforms | Web, iOS, Android | Web |
| Free plan | No | Yes |
| Paid from | 100 /mo | 14 /mo |
| Email automation | Yes | Yes |
| Subscriber limit | — | 1,000 contacts |
| Monthly send limit | — | 10,000 emails/mo |
| Audience segmentation | — | Yes |
| A/B testing | — | Yes |
Both are listed in Best Email Marketing Software. On Samsung Mobile US Press, Customer.io scores higher on our published basis.