Mailchimp CSV Validator

Mailchimp audience imports need valid email addresses and properly formatted merge fields. Validate your Mailchimp CSV locally — check the Email Address column, merge field formats, and overall list quality with platform-specific validation rules.

Every validation includes a Health Score (0–100 with A–F grade) that diagnoses data quality issues — not just pass/fail results. Your files are processed entirely in your browser with no server uploads.