ZeroBounce

Connect ZeroBounce to verify email addresses and improve deliverability in your workflows.

How to set up ZeroBounce

Authentication

ZeroBounce uses API key authentication:

1. Sign up at zerobounce.com
2. Navigate to your API settings
3. Copy your API key
4. Paste the API key in Cargo when connecting

ZeroBounce actions

Verify email

Check if an email address is valid and deliverable.

Required fields:

• Email: The email address to verify

Credits: 0.1 credits per verification

Verification statuses

ZeroBounce returns detailed verification results:

Status	Description
valid	Email exists and is deliverable
invalid	Email does not exist or will bounce
catch-all	Domain accepts all emails (unverifiable)
spamtrap	Known spam trap - do not email
abuse	Known complainer address
do_not_mail	Should not be emailed (role-based, etc.)
unknown	Unable to determine status

Response data

Field	Description
status	Verification status
sub_status	Detailed status reason
account	Email account name
domain	Email domain
did_you_mean	Suggested correction for typos
domain_age	Age of the domain
free_email	Is it a free email provider?
mx_found	Does domain have MX records?
mx_record	Primary MX record
smtp_provider	Email service provider

Best practices

• Verify emails before importing to your email platform
• Re-verify old contacts periodically (emails decay)
• Treat “catch-all” as valid but monitor bounces
• Never email “spamtrap” or “abuse” addresses
• Use “did_you_mean” to suggest corrections
• Cache verification results to save credits

Integration with other tools

ZeroBounce works well in combination with:

• Email finders: Verify found emails before outreach
• CRM sync: Keep verification status updated
• Campaign tools: Ensure list hygiene before sends