Getting high deliverability rates is critical for cold outreach. Here are best practices to follow when using Cleanlist-enriched data.
Use the email validation smart column
Before sending outreach, run the Email Validation smart column (0.2 credits/lead) on your list. This checks each email against verification services and marks them as:
Valid (reliable) - Safe to send. The email exists and can receive messages.
Risky - The email may work but has potential issues (catch-all domain, unverifiable). Use with caution in cold outreach.
Invalid - Do not send. The email will bounce.
Unknown - Could not be verified. The mail server did not respond.
Segmentation rules
Always send to: Valid/reliable emails only for cold outreach campaigns.
Send with caution: Risky emails can be included in smaller batches - monitor bounce rates.
Never send to: Invalid emails. Remove them from your list before any outreach.
Protect your sender reputation
Keep bounce rates below 2% per campaign.
Always include an unsubscribe mechanism.
Warm up new email domains before sending at volume.
Start with smaller batches and gradually increase volume.
Remove bounced addresses immediately.
Tips for higher match rates
Include LinkedIn URLs in your data - they significantly improve enrichment accuracy.
Provide company domain (not just company name) when possible.
Use full enrichment to get the most complete data.