Worked on the cypht-org/cypht repository to enhance the Email Client’s frontend by addressing duplicate recipient suggestions in the To, Cc, and Bcc fields. Applied JavaScript and PHP to implement validation logic that prevents users from seeing the same email address multiple times during autocomplete, reducing confusion and the risk of misdirected messages. Focused on UI/UX design principles to streamline the email composition process and improve user trust. Ensured end-to-end traceability from commit to production, demonstrating a methodical approach to feature delivery. The work strengthened frontend validation and contributed to a more reliable and efficient recipient selection experience.