> For the complete documentation index, see [llms.txt](https://help.konnektive.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.konnektive.com/konnektive-crm/admin-setup/plugins/express-consent/expressed-consent.md).

# Expressed Consent

Back in April 2019, Mastercard rolled out new regulations that affect negative option billing merchants. A negative option billing merchant provides a consumer with a sample of a physical product at no cost or nominal cost. The consumer agrees to an ongoing subscription after which the merchant ships the product on a recurring basis and charges the consumer full price. Below are articles that explain the reuglations more in-depth and they explain how you can remain compliant with Mastercard while processing in the negative-option billing space.

### Related articles <a href="#expressedconsent-relatedarticles" id="expressedconsent-relatedarticles"></a>

* [Expressed Consent Guidelines](/konnektive-crm/admin-setup/plugins/express-consent/expressed-consent-guidelines.md)
* [Expressed Consent CRM Configuration](/konnektive-crm/admin-setup/plugins/express-consent/expressed-consent-crm-configuration.md)