Brevo Contacts Import Failed

How to fix it

Try these in order — the most common fix is first.

1. 1. Read the import report

   1. After the import open the report to see rejected rows and reasons
   Did this fix it? Yes No

2. 2. Prepare the file

   Copy steps
   1. Save as CSV UTF-8 with a header row
   2. One email per row, remove invalid addresses
   3. Match attribute types, use consistent date formats
   Did this fix it? Yes No

3. 3. Handle blocklisted contacts

   Copy steps
   1. Blocklisted contacts are not re-added by a normal import
   2. Follow Brevo's separate blocklist import flow, or resubscribe them where you have consent
   3. Note blocklist status is per channel (email vs SMS)
   Did this fix it? Yes No

4. 4. Remove CONTACT_ID

   1. CONTACT_ID is auto-generated and cannot be set; drop that column or do not map it
   Did this fix it? Yes No

5. 5. API imports

   1. Poll the returned process ID until it reports completion or failure details
   Did this fix it? Yes No

Symptoms

Import errors, contacts missing after import, fewer contacts than the file.

Why it happens

• Wrong file format or encoding
• Invalid or role addresses
• Contacts previously blocklisted or unsubscribed
• Duplicates merged into one
• Header mapping mismatch or invalid CONTACT_ID
• Attribute type mismatch (date, number)

This guide also covers

• brevo import contacts failed
• brevo csv import error
• brevo contacts not importing
• brevo blocklisted contacts import

The same problem in other apps

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Other Brevo errors

• Brevo Account Suspended or Under Review
• Brevo Emails Going to Spam
• Brevo Domain Authentication Failed (DKIM, DMARC)
• Brevo SMTP Relay 535 Authentication Failed
• Brevo Daily Sending Limit Reached (300 Emails)
• Brevo Emails Not Delivered, Bounced or Deferred
• Brevo Account Not Approved for Sending
• How to Cancel Brevo Subscription