* Before-save Apex Trigger:
* This is the best solution because a before-save trigger runs before the record is saved to the database, providing an opportunity to validate or modify the data.
* In this case, the Apex trigger can validate the email address using a regular expression or a third- party API call to ensure the email address is valid. If the email is invalid, an error message can be displayed using addError().
* Why not the other options?
* A. Submit a REST API Callout with a JSON payload:
* REST callouts are more complex and generally not recommended for simple validation tasks like email format validation. Additionally, callouts cannot be performed directly in a before-save trigger.
* C. Use a custom Lightning Web Component (LWC):
* LWCs are primarily for UI interactions and should not be used to enforce data validations that are server-side requirements.
* D. Use an Approval Process:
* Approval Processes are for managing the approval flow of records, not for real-time validations. They cannot enforce email validation directly.
References:
* Apex Triggers Documentation
* Trigger Context Variables