Hi @dmytro Currently the API only supports getting the subscription details for a single email at a time. As an alternative to using the Email API, you can use the Contacts API to get the contact properties for multiple email addresses in a single request, and look at the hs_email_optout to get the status of the contact (if that property is true, the contact is opted out of email). You’ll also have other hs_email_optout_[subscription id] properties for each subscription type you have set up t…
— there is no “all contacts” version of this endpoint, but you can include properties like hs_email_bounce, hs_email_optout, and hs_email_optout_[subscription id] in Get all contacts requests and it should return values if they exist. I just confirmed this behavior in my own portal.