How to set up NeverBounce
Authentication
NeverBounce uses API key authentication:- Sign up at neverbounce.com
- Navigate to API in your dashboard
- Copy your API key
- Paste the API key in Cargo when connecting
NeverBounce actions
Verify email
Check if an email address is valid and deliverable. Required fields:- Email: The email address to verify
Verification results
NeverBounce returns clear verification statuses:| Result | Description | Action |
|---|---|---|
| valid | Email exists and is deliverable | Safe to email |
| invalid | Email does not exist or bounces | Remove from list |
| disposable | Temporary/throwaway email address | Avoid emailing |
| catchall | Domain accepts all emails | Use caution |
| unknown | Unable to determine status | Retry later |
Response data
| Field | Description |
|---|---|
| result | Verification result |
| flags | Additional flags (role, free, etc.) |
| suggested_correction | Typo correction suggestion |
| execution_time | Time taken to verify |
Best practices
- Verify emails at point of capture for best data quality
- Re-verify periodically (recommended every 3-6 months)
- Treat “catchall” emails as valid but monitor for bounces
- Remove “disposable” emails - they indicate low-quality leads
- Use suggested corrections to fix typos automatically
- Cache results to avoid redundant verification
Integration benefits
- Improved deliverability: Only email verified addresses
- Better sender reputation: Reduce bounce rates
- Cost savings: Don’t pay to email invalid addresses
- Higher engagement: Focus on real contacts