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The Email user block allows you to ask your user for an email address with automatic format validation. It provides a specialized input field that ensures proper email format before allowing the user to proceed.
Email input in flow builder

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Configuration

  • Placeholder: Set the placeholder text shown in the email input field (supports variables).
  • Button Label: Customize the text shown on the submit button (supports variables).
  • Save Answer: Choose a variable to store the collected email address.

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Email Format Validation

The block automatically validates email format and displays a retry message when detection fails. Common validation rules include:
  • Presence of exactly one @ symbol
  • Valid characters in username and domain parts
  • Proper domain structure (e.g., domain.extension)
it does NOT verify:
  • Whether the email address actually exists
  • If the domain is valid and reachable
  • If the mailbox can receive messages
For comprehensive email validation beyond format checking, you’ll need to integrate with external services using an HTTP Request block:
  • Email deliverability services
  • Domain verification APIs
  • Real-time email validation services

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Integration Examples

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Basic Email Collection

User Input: john.doe@example.com
Validation: ✓ Format valid
Saved Variable: john.doe@example.com

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Invalid Format Handling

User Input: john.doe@
Validation: ✗ Format invalid
Display: Custom retry message
User Action: Re-enter valid email