Contacts can opt out themselves from WhatsApp by sending STOP or when they click the Unsubscribe buttons in your feeds, for example. Sometimes you may need to manually opt out a contact; here's how.

From Simio

Go to the Conversations tab, then in the right column you can change the customer's optin status.

From Shopify

Go to a customer's page and click Edit Marketing Options.

The information will be immediately transmitted to Simio.

From Klaviyo

Go to a profile page, then change the custom property whatsappOptin to false .