UA is a technical requirement that ensures all valid domain names and email addresses can be used by all Internet-enabled applications, devices, and systems. While the DNS has changed in recent years, the checks used by many software applications to validate domain names and email addresses remain outdated. Many systems do not recognize or appropriately process new domain names. These domain names include new generic top-level domains (e.g., .photography), Internationalized Domain Names (e.g., एमईआईटीवाई.सरकार.भारत/, 红螺寺.网址, صحة.مصر, стопкоронавирус.рф), and country code top-level domains (e.g., .ไทย). In addition, not all online portals are primed for the opening of a user account with a related email address. That is why awareness of and support for UA is critical for a truly global, multilingual Internet.