Skip to main content
Your contacts must be able to unsubscribe/opt out of receiving marketing emails. You can set the email_is_transactional field when sending an email to specify its type. If a contact has unsubscribed, and the email_is_transactional attribute is set to false, the contact will not receive the email. Open enables opting out contacts in two ways:
  • An API for generating links that your contacts can click to unsubscribe
  • An API for unsubscribing contacts from within your apps
You can call this endpoint to generate a link that you can put in the body of any email, or anywhere in your application. You can generate this link using the contact’s email, or their contact ID.

​
Unsubscribe via API call from your apps

In case you want your contacts to unsubscribe in a way other than clicking a link and being redirected to Open, you can directly call this endpoint to mark a contact as unsubscribed from all email.