5 free lookups. No credit card required.
The most common Customer.io email format is [first] (ex. jane@customer.io), which is being used by 46.7% of Customer.io work email addresses. Other common Customer.io email patterns are [first].[last] (ex. jane.doe@customer.io) and [last] (ex. doe@customer.io). In all, Customer.io uses 5 work email formats.
| Email Format | Example | Percentage |
|---|---|---|
| [first] | jane@customer.io |
46.7%
|
| [first].[last] | jane.doe@customer.io |
44.4%
|
| [last] | doe@customer.io |
8.0%
|
| [first][last_initial] | janed@customer.io |
0.7%
|
| [first].[last_initial] | jane.d@customer.io |
0.2%
|