> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.lettbestilt.no/_mcp/server.

# Coupons and newsletter


## API Docs

- Coupons and newsletter [Validate a coupon code](https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/validate-coupon.md)
- Coupons and newsletter [Preview the automatic promotion](https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/preview-automatic-promotion.md)
- Coupons and newsletter [Sign up for the newsletter](https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/sign-up-for-newsletter.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/openapi.json)
- [OpenAPI YAML](https://docs.lettbestilt.no/api-reference/coupons-and-newsletter/openapi.yaml)