> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://mailchimp.com/developer/transactional/api/rejects/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://mailchimp.com/developer/_mcp/server.

# Rejects

> Find all the Mailchimp API documentation and tools developers need to send marketing and transactional emails.


## API Docs

- Rejects [Add email to rejection blacklist](https://mailchimp.com/developer/transactional/api/rejects/add.md)
- Rejects [Add SMS to denylist](https://mailchimp.com/developer/transactional/api/rejects/add-sms.md)
- Rejects [List rejection blacklist entries](https://mailchimp.com/developer/transactional/api/rejects/list.md)
- Rejects [List SMS denylist](https://mailchimp.com/developer/transactional/api/rejects/list-sms.md)
- Rejects [Remove from blacklist](https://mailchimp.com/developer/transactional/api/rejects/delete.md)
- Rejects [Remove SMS from denylist](https://mailchimp.com/developer/transactional/api/rejects/delete-sms.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://mailchimp.com/developer/openapi.json)
- [OpenAPI YAML](https://mailchimp.com/developer/openapi.yaml)