diff --git a/src/app/account/settings/acc-settings/acc-settings.component.html b/src/app/account/settings/acc-settings/acc-settings.component.html
index bd86b99f5..6bd3bcfff 100644
--- a/src/app/account/settings/acc-settings/acc-settings.component.html
+++ b/src/app/account/settings/acc-settings/acc-settings.component.html
@@ -10,7 +10,7 @@
         data-testid="input-registered-since"
       ></input-text>
     </div>
-    <input-text email inputType="email" title="Email" formControlName="email" [isRequired]="true" data-testid="input-email"></input-text>
+    <input-text title="Email" formControlName="email" [isRequired]="true" data-testid="input-email"></input-text>
     <grid-buttons>
       <button-submit [name]="'Update'" (click)="onSubmit()" [disabled]="form.pending" data-testid="button-update-submit"></button-submit>
       @if (isUpdatingLoading) {
diff --git a/src/app/account/settings/acc-settings/acc-settings.component.ts b/src/app/account/settings/acc-settings/acc-settings.component.ts
index 3a1b5ea5a..6063ff33a 100644
--- a/src/app/account/settings/acc-settings/acc-settings.component.ts
+++ b/src/app/account/settings/acc-settings/acc-settings.component.ts
@@ -14,6 +14,7 @@ import { SERV } from '@services/main.config';
 import { changeOwnPasswordResponseSchema } from '@src/app/account/settings/acc-settings/acc-settings.schema';
 import { JUserSchema } from '@src/app/core/_models/user.schema';
 import { JsonAPISerializer } from '@src/app/core/_services/api/serializer-service';
+import { emailValidator } from '@src/app/core/_validators/email.validator';
 import { passwordMatchValidator } from '@src/app/core/_validators/password.validator';
 
 export interface UpdateUserPassword {
@@ -85,6 +86,9 @@ export class AccountSettingsComponent implements OnInit, OnDestroy {
     this.createForm();
     this.loadUserSettings();
     this.createUpdatePassForm();
+
+    this.form.markAllAsTouched();
+    this.form.updateValueAndValidity();
   }
 
   /**
@@ -102,7 +106,7 @@ export class AccountSettingsComponent implements OnInit, OnDestroy {
     this.form = new FormGroup({
       name: new FormControl({ value: '', disabled: true }), // disabled, no validators needed
       registeredSince: new FormControl({ value: '', disabled: true }), // disabled, no validators needed
-      email: new FormControl('', [Validators.required, Validators.email])
+      email: new FormControl('', [Validators.required, emailValidator])
     });
   }
 
diff --git a/src/app/core/_services/metadata.service.ts b/src/app/core/_services/metadata.service.ts
index 135d5aeb5..29f344c33 100644
--- a/src/app/core/_services/metadata.service.ts
+++ b/src/app/core/_services/metadata.service.ts
@@ -10,6 +10,7 @@ import { ConfigTooltipsLevel, TooltipService } from '@services/shared/tooltip.se
 import { fileFormat } from '@src/app/core/_constants/files.config';
 import { ACCESS_GROUP_FIELD_MAPPING, FieldMapping } from '@src/app/core/_constants/select.config';
 import { Option, Setting, dateFormats, proxytype, serverlog } from '@src/app/core/_constants/settings.config';
+import { emailValidator } from '@src/app/core/_validators/email.validator';
 import { urlValidator } from '@src/app/core/_validators/url.validator';
 
 /**
@@ -1138,7 +1139,7 @@ export class MetadataService {
       label: 'Email',
       type: 'email',
       requiredasterisk: true,
-      validators: [Validators.required, Validators.email]
+      validators: [Validators.required, emailValidator]
     },
     {
       name: 'globalPermissionGroupId',
diff --git a/src/app/core/_validators/email.validator.ts b/src/app/core/_validators/email.validator.ts
new file mode 100644
index 000000000..a6e23de7c
--- /dev/null
+++ b/src/app/core/_validators/email.validator.ts
@@ -0,0 +1,14 @@
+import { AbstractControl, ValidationErrors } from '@angular/forms';
+
+/**
+ * Validates email-adresses with a regex, which mirrors PHP's FILTER_VALIDATE_EMAIL internal implementation
+ */
+export const emailValidator = (control: AbstractControl): ValidationErrors | null => {
+  const value = control.value as string;
+  if (!value) return null;
+
+  const phpEmailRegex =
+    /^[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-zA-Z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-zA-Z0-9](?:[a-zA-Z0-9-]*[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}$/;
+
+  return phpEmailRegex.test(value) ? null : { email: true };
+};
diff --git a/src/app/users/new-user/new-user.form.ts b/src/app/users/new-user/new-user.form.ts
index 1f3459898..ac93a1d49 100644
--- a/src/app/users/new-user/new-user.form.ts
+++ b/src/app/users/new-user/new-user.form.ts
@@ -3,6 +3,8 @@
  */
 import { FormControl, FormGroup, Validators } from '@angular/forms';
 
+import { emailValidator } from '@src/app/core/_validators/email.validator';
+
 /**
  * Interface definition for NewUserForm
  * @prop username                     Username
@@ -24,7 +26,7 @@ export interface NewUserForm {
 export const getNewUserForm = () => {
   return new FormGroup<NewUserForm>({
     username: new FormControl('', [Validators.required]),
-    email: new FormControl('', [Validators.required, Validators.email]),
+    email: new FormControl('', [Validators.required, emailValidator]),
     globalPermissionGroupId: new FormControl(undefined, [Validators.required]),
     isValid: new FormControl(false)
   });