id,Name,"""Email""",Notes
1,Alice Smith,Alice@Example.COM,"""VIP"" customer - contact ASAP..."
2,Bob Jones,bob@example.com,"it's 5'6"" tall"
3,Carol Brown,CAROL@EXAMPLE.COM,3 × 4 = 12 (preserve ×)
4,,empty@example.com,whitespace-only name (becomes empty)
