E04006 — DomainNotVerified

The from address uses a domain that is not verified in this workspace.

• HTTP status: 422
• Type: validation_error
• Name: DomainNotVerified

What to do

Verify the sending domain, or send from a domain that is already verified.

Operations that resolve this:

• List sending domains
• Create a sending domain
• Verify a domain

Related

• E04xxx — Email sending & delivery: every code in this range
• Errors: the full wire contract, status mapping, and error catalog
• Error handling: branching on type and code, validation details, and vendor_code