> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getcargo.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# 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](https://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