Hey @Rkoldaro, thanks for surfacing! Good news: your client list and any associated emails from Square Appointments are included in your customer directory online. This means any email address added by you or by your client while making an appointment will be able to be included with any campaign that you send out.

Visit our Support Center for more information and step-by-steps on sending automatic email campaigns and customized email campaigns. 📧💨

Hope this helps. Let us know if anything else comes up!