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src/Sentry/Internal/EmailValidator.cs

@@ -11,7 +11,7 @@ internal static partial class EmailValidator
 
 #if NET9_0_OR_GREATER
     [GeneratedRegex(EmailPattern)]
-    private static partial Regex EmailRegex { get; }
+    private static partial Regex Email { get; }
 #elif NET8_0
     [GeneratedRegex(EmailPattern)]
     private static partial Regex EmailRegex();
@@ -32,10 +32,6 @@ public static bool IsValidEmail(string? email)
             return true;
         }
 
-#if NET9_0_OR_GREATER
-        return EmailRegex.IsMatch(email);
-#else
         return Email.IsMatch(email);
-#endif
     }
 }

src/Sentry/Internal/Hub.cs

@@ -553,7 +553,7 @@ public void CaptureFeedback(SentryFeedback feedback, Action<Scope> configureScop
 
         try
         {
-            if (!EmailValidator.IsValidEmail(feedback.ContactEmail))
+            if (!string.IsNullOrWhiteSpace(feedback.ContactEmail) && !EmailValidator.IsValidEmail(feedback.ContactEmail))
             {
                 _options.LogWarning("Feedback dropped due to invalid email format: '{0}'", feedback.ContactEmail);
                 return;