FlObfuscateEmail function
Implementation
String FlObfuscateEmail(String email) {
if (email.isEmpty) return '';
final List<String> parts = email.split('@');
if (parts.length != 2) return email;
final String username = parts[0];
final String domain = parts[1];
final String obfuscatedUsername =
username.substring(0, 1) + '*' * (username.length - 1);
return '$obfuscatedUsername@$domain';
}