================== MAIL LOG ==================
        🕒 Time: 05-01-2026 22:02:32,
        📧 To: internship@koltdigital.in,
        📨 Subject: Update on Your Referral Coupon Code and Discount,
        📤 From: KOLT Digital Referral Program <internship@koltdigital.in>,
        📬 Status: Failed,
        📩 Info: N/A,
        ❗ Error: Message failed: 554 5.7.1 Disabled by user from hPanel,
        -----------------------------------------------