While real-time validation can significantly improve the quality of your email list, it is not a foolproof solution. Some issues that it cannot address include:
Temporary Issues: Email addresses that are temporarily unavailable may still pass validation but result in bounces later. Human Error: Users may still enter valid but incorrect emails (e.g., typos in the username part). Spam Traps: Real-time validation may not always identify spam traps, which can affect your sender reputation.
Despite these limitations, real-time validation remains a valuable tool in maintaining a healthy email list.