> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fluz.app/llms.txt
> Use this file to discover all available pages before exploring further.

# UserLookupInput

> Input for looking up a user recipient by a specific identifier.

**Input object**

Input for looking up a user recipient by a specific identifier.
Exactly one identifier must be provided.

## Input fields

<ParamField name="phoneNumber" type="String">
  Lookup by phone number (E.164 format recommended, e.g., +14155551234).
  10-digit US numbers are automatically normalized.
</ParamField>

<ParamField name="email" type="String">
  Lookup by email address (case-insensitive).
</ParamField>