Currently, the trigger system in the PMS (Project Management System) only allows sending emails to predefined groups such as team members, owners, or clients registered within the system. However, there is no option to send an email to a custom, non-registered email address. This limitation makes it difficult to notify external stakeholders or third-party individuals who are not part of the system.

I would like to request the addition of a feature that allows users to specify a custom email address within the trigger actions, so that notifications can be sent to anyone regardless of their registration status in the system. This would enhance the flexibility and usability of the email notification system.