Dhairya Jangir developed a robust timestamping feature for local attachments in the nextcloud/mail repository, focusing on enhancing data integrity and auditability. By introducing time abstraction through the ITimeFactory interface and integrating it into the AttachmentService, Dhairya ensured that each attachment’s creation time is accurately recorded. The implementation leveraged PHP for back end development and emphasized dependency injection to improve maintainability. Dhairya also updated unit and integration tests, using mocking techniques to validate the new behavior across environments. This work demonstrated a methodical approach to test-driven development and strengthened the reliability of attachment creation within the Nextcloud Mail application.