diff --git a/modules/auth/lib/src/features/sign_up/presentation/state/sign_up_view_model.dart b/modules/auth/lib/src/features/sign_up/presentation/state/sign_up_view_model.dart
index 3c53b5cb..2d82eea1 100644
--- a/modules/auth/lib/src/features/sign_up/presentation/state/sign_up_view_model.dart
+++ b/modules/auth/lib/src/features/sign_up/presentation/state/sign_up_view_model.dart
@@ -495,7 +495,6 @@ class SignUpViewModel extends Notifier<SignUpViewState> {
   String _emailErrorFor(String value) {
     final email = value.trim();
     if (email.isEmpty) return I18n.errorEmailRequired;
-    if (email.contains('+')) return I18n.errorEmailPlusNotAllowed;
     if (!_isValidEmail(email)) return I18n.errorEmailInvalid;
     return '';
   }
diff --git a/modules/legacy/modules/legacy_auth/lib/src/features/sign_up/presentation/mixins/sign_up_form_validation.dart b/modules/legacy/modules/legacy_auth/lib/src/features/sign_up/presentation/mixins/sign_up_form_validation.dart
index f18aed7f..349d4b7d 100644
--- a/modules/legacy/modules/legacy_auth/lib/src/features/sign_up/presentation/mixins/sign_up_form_validation.dart
+++ b/modules/legacy/modules/legacy_auth/lib/src/features/sign_up/presentation/mixins/sign_up_form_validation.dart
@@ -15,7 +15,6 @@ mixin SignUpFormValidation {
   String emailErrorFor(String value) {
     final email = value.trim();
     if (email.isEmpty) return I18n.errorEmailRequired;
-    if (email.contains('+')) return I18n.errorEmailPlusNotAllowed;
     if (!_emailRegex.hasMatch(email)) return I18n.errorEmailInvalid;
     return '';
   }