diff --git a/integration_tests/conftest.py b/integration_tests/conftest.py
index e120148c..a3322598 100644
--- a/integration_tests/conftest.py
+++ b/integration_tests/conftest.py
@@ -186,7 +186,7 @@ def _dj_autoclear_mailbox() -> None:
 @pytest.fixture
 def link_from_mail(mailbox):
 
-    def _delegate(email, subject=None):
+    def _delegate(email: str, subject=None):
         for message in mailbox(email):
             if subject is None or subject in message['subject']:
                 html = message.get_payload()[1].get_payload()
diff --git a/integration_tests/test_parent.py b/integration_tests/test_parent.py
index f10b4910..d33da636 100644
--- a/integration_tests/test_parent.py
+++ b/integration_tests/test_parent.py
@@ -7,6 +7,7 @@
 
 from playwright.sync_api import Page, expect
 
+
 @pytest.fixture
 def default_signup_fill_form(page: Page, apps):
     """opens the signup form and fills some default values. individual tests should overwrite as necessary"""
@@ -41,23 +42,26 @@ def default_signup_fill_form(page: Page, apps):
 
 @pytest.fixture
 def signup(page: Page, apps, default_signup_fill_form):
-    suffix = ''.join(random.choice(string.digits) for i in range(4))
-    email = f'parent{suffix}@localhost.local'
+    def delegate():
+        suffix = ''.join(random.choice(string.digits) for i in range(4))
+        email = f'parent{suffix}@localhost.local'
 
-    page.fill('#id_email', email)
-    page.fill('#id_email_again', email)
-    page.click('input[type="submit"]')
+        page.fill('#id_email', email)
+        page.fill('#id_email_again', email)
+        page.click('input[type="submit"]')
 
-    # check that the form was submitted
-    expect(page.locator('input[type="submit"]')).not_to_be_visible()
-    assert 'signup/done' in page.url
+        # check that the form was submitted
+        expect(page.locator('input[type="submit"]')).not_to_be_visible()
+        assert 'signup/done' in page.url
 
-    return email
+        return email
+    return delegate
 
 
 def test_parent_login(page, apps, signup, as_admin, link_from_mail, login_as):
     # confirm signup email
-    if link := link_from_mail(signup, 'Bevestiging'):
+    address = signup()
+    if link := link_from_mail(address, 'Bevestiging'):
         page.goto(link)
     else:
         pytest.fail('could not find validation link')
@@ -69,7 +73,7 @@ def test_parent_login(page, apps, signup, as_admin, link_from_mail, login_as):
     as_admin.locator("button").get_by_text("Approve").click()
 
     # try to login via email
-    login_as(signup)
+    login_as(address)
 
     # check that login worked
     expect(page.get_by_text('Appointments')).to_be_visible()
@@ -77,13 +81,14 @@ def test_parent_login(page, apps, signup, as_admin, link_from_mail, login_as):
 
 def test_parent_login_unapproved(signup, apps, page, link_from_mail, login_as):
     # confirm signup email
-    if link := link_from_mail(signup, 'Bevestiging'):
+    address = signup()
+    if link := link_from_mail(address, 'Bevestiging'):
         page.goto(link)
     else:
         pytest.fail('could not find validation link')
 
     # make sure that no login email has arrived
-    assert login_as(signup) is False
+    assert login_as(address) is False
 
 
 def test_parent_self_deactivate(page, participant, login_as):
@@ -187,8 +192,6 @@ def test_signup_save_longer(page, apps, default_signup_fill_form):
 
 
 def test_signup_unborn(page, apps, default_signup_fill_form):
-    Signup = apps.lab.get_model('signups', 'Signup')
-
     now = datetime.datetime.now()
     page.locator('#id_birth_date_year').select_option(str(now.year))
     page.locator('#id_birth_date_month').select_option(now.strftime('%B'))
@@ -198,3 +201,40 @@ def test_signup_unborn(page, apps, default_signup_fill_form):
 
     # check that the form was submitted
     assert page.locator('select.is-invalid').count() == 3
+
+
+def test_signup_confirmation_expired(page, apps, signup, as_admin, link_from_mail):
+    # confirm signup email
+    address = signup()
+
+    Signup = apps.lab.get_model('signups', 'Signup')
+    s = Signup.objects.last()
+    s.created = timezone.now() - datetime.timedelta(hours=25)
+    s.save()
+
+    if link := link_from_mail(address, 'Bevestiging'):
+        page.goto(link)
+        expect(page.get_by_text('niet meer geldig')).to_be_visible()
+    else:
+        pytest.fail('could not find validation link')
+
+    s = Signup.objects.last()
+    assert s.email_verified is None
+
+
+def test_parent_login_expired(participant, apps, page, link_from_mail, login_as):
+    MailAuth = apps.lab.get_model('mailauth', 'MailAuth')
+
+    page.goto(apps.parent.url + 'auth/')
+    page.fill('input[name="email"]', participant.email)
+    page.locator('button').get_by_text('Send').click()
+
+    mauth = MailAuth.objects.last()
+    mauth.expiry = timezone.now() - datetime.timedelta(seconds=1)
+    mauth.save()
+
+    link = link_from_mail(participant.email, 'Link')
+    page.goto(link)
+    expect(page.get_by_text('verlopen')).to_be_visible()
+
+    expect(page.get_by_text('Appointments')).not_to_be_visible()
diff --git a/lab/mailauth/locale/nl/LC_MESSAGES/django.po b/lab/mailauth/locale/nl/LC_MESSAGES/django.po
index cf904ecf..fb6eb554 100644
--- a/lab/mailauth/locale/nl/LC_MESSAGES/django.po
+++ b/lab/mailauth/locale/nl/LC_MESSAGES/django.po
@@ -21,3 +21,6 @@ msgstr ""
 #: mailauth/models.py:33
 msgid "mailauth:send:subject"
 msgstr "Babylab voor Taalonderzoek: Link voor Babylabportaal"
+
+msgid "mailauth:error:expired"
+msgstr "Helaas is deze link verlopen. U kunt opnieuw inloggen via BABYLABPORTAAL hieronder."
\ No newline at end of file
diff --git a/lab/mailauth/models.py b/lab/mailauth/models.py
index 246d6387..e850004f 100644
--- a/lab/mailauth/models.py
+++ b/lab/mailauth/models.py
@@ -1,4 +1,6 @@
+import dataclasses
 from datetime import datetime
+from enum import Enum, auto
 from secrets import token_urlsafe
 from typing import List, Optional, Tuple
 
@@ -6,7 +8,7 @@
 from cdh.mail.classes import TemplateEmail
 from django.conf import settings
 from django.db import models
-from django.utils import translation
+from django.utils import timezone, translation
 from django.utils.translation import gettext_lazy as _
 
 from participants.models import Participant
@@ -64,15 +66,28 @@ def create_mail_auth(
     return MailAuth.objects.create(expiry=expiry, email=email, participant=participant)
 
 
-def try_authenticate(token: str) -> Tuple[Optional[MailAuth], List[Participant]]:
+class MailAuthReason(Enum):
+    SUCCESS = auto()
+    NOT_FOUND = auto()
+    EXPIRED = auto()
+
+
+@dataclasses.dataclass
+class MailAuthResult:
+    reason: MailAuthReason
+    mauth: Optional[MailAuth] = None
+    possible_pps: List[Participant] = dataclasses.field(default_factory=list)
+
+
+def try_authenticate(token: str) -> MailAuthResult:
     try:
-        mauth = MailAuth.objects.get(
-            link_token=token,
-            # link should not be too old
-            expiry__gte=datetime.now(),
-        )
+        mauth = MailAuth.objects.get(link_token=token)
     except MailAuth.DoesNotExist:
-        return None, []
+        return MailAuthResult(reason=MailAuthReason.NOT_FOUND)
+
+    if mauth.expiry < timezone.now():
+        # link should not be too old
+        return MailAuthResult(reason=MailAuthReason.EXPIRED)
 
     possible_pps = []
     if not mauth.participant:
@@ -91,7 +106,7 @@ def try_authenticate(token: str) -> Tuple[Optional[MailAuth], List[Participant]]
 
     mauth.session_token = token_urlsafe()
     mauth.save()
-    return mauth, possible_pps
+    return MailAuthResult(mauth=mauth, possible_pps=possible_pps, reason=MailAuthReason.SUCCESS)
 
 
 def lookup_session_token(token: str) -> Optional[Participant]:
diff --git a/lab/mailauth/views.py b/lab/mailauth/views.py
index 10207715..2c769353 100644
--- a/lab/mailauth/views.py
+++ b/lab/mailauth/views.py
@@ -1,12 +1,19 @@
-from datetime import datetime, timedelta
+from datetime import timedelta
 
+from django.utils import timezone, translation
+from django.utils.translation import gettext as _
 from rest_framework import exceptions, views
 from rest_framework.response import Response
 
 from participants.models import Participant
 from participants.serializers import ParticipantSerializer
 
-from .models import create_mail_auth, resolve_participant, try_authenticate
+from .models import (
+    MailAuthReason,
+    create_mail_auth,
+    resolve_participant,
+    try_authenticate,
+)
 
 
 class MailAuthView(views.APIView):
@@ -15,15 +22,20 @@ def get(self, request, *args, **kwargs):
             return Response(dict())
 
         # look for valid auth object for token
-        mauth, possible_pps = try_authenticate(kwargs["token"])
-        if mauth is not None:
+        result = try_authenticate(kwargs["token"])
+        if result.mauth is not None:
             # valid token
             return Response(
                 dict(
-                    session_token=mauth.session_token,
-                    possible_pps=[ParticipantSerializer(pp).data for pp in possible_pps],
+                    session_token=result.mauth.session_token,
+                    possible_pps=[ParticipantSerializer(pp).data for pp in result.possible_pps],
                 )
             )
+
+        if result.reason == MailAuthReason.EXPIRED:
+            with translation.override("nl"):
+                return Response(dict(reason=_("mailauth:error:expired")), status=410)
+
         raise exceptions.AuthenticationFailed()
 
     def post(self, request, *args, **kwargs):
@@ -35,7 +47,7 @@ def post(self, request, *args, **kwargs):
             return Response(dict())
 
         # email exists, generate token and send it
-        expiry = datetime.now() + timedelta(hours=24)
+        expiry = timezone.now() + timedelta(hours=24)
         mauth = create_mail_auth(expiry, email)
 
         # while there might be multiple participants matching the given email address,
diff --git a/lab/signups/locale/nl/LC_MESSAGES/django.po b/lab/signups/locale/nl/LC_MESSAGES/django.po
index 2a163033..691e9dcc 100644
--- a/lab/signups/locale/nl/LC_MESSAGES/django.po
+++ b/lab/signups/locale/nl/LC_MESSAGES/django.po
@@ -88,4 +88,10 @@ msgid "signups:messages:rejected"
 msgstr ""
 
 msgid "signups:mail:validation:subject"
-msgstr "Babylab voor Taalonderzoek: Bevestiging e-mailadres"
\ No newline at end of file
+msgstr "Babylab voor Taalonderzoek: Bevestiging e-mailadres"
+
+msgid "signups:verify:error:expired"
+msgstr ""
+"<p>Deze link is niet meer geldig. Uw gegevens hebben wij daarom helaas moeten verwijderen.</p>"
+"<p>Wilt u uw kind toch graag aanmelden voor het Babylab voor Taalonderzoek, "
+"dan verzoeken wij u vriendelijk om dit opnieuw te doen via AANMELDEN hieronder.</p>"
diff --git a/lab/signups/views.py b/lab/signups/views.py
index 5702c0cf..2b3ae383 100644
--- a/lab/signups/views.py
+++ b/lab/signups/views.py
@@ -1,9 +1,11 @@
+from datetime import timedelta
+
 import braces.views as braces
 from django.contrib import messages
 from django.http.response import HttpResponse
 from django.shortcuts import redirect
 from django.urls import reverse_lazy
-from django.utils import timezone
+from django.utils import timezone, translation
 from django.utils.translation import gettext_lazy as _
 from django.views.generic import DetailView, ListView
 from rest_framework import views
@@ -82,6 +84,11 @@ def reject_signup(signup: Signup):
 class SignupVerifyView(views.APIView):
     def get(self, request, *args, **kwargs):
         signup = Signup.objects.get(link_token=kwargs["token"])
-        signup.email_verified = timezone.now()
-        signup.save()
-        return Response(dict())
+        if timezone.now() - signup.created > timedelta(days=1):
+            # expired
+            with translation.override("nl"):
+                return Response(dict(reason=_("signups:verify:error:expired")), status=410)
+        else:
+            signup.email_verified = timezone.now()
+            signup.save()
+            return Response(dict())
diff --git a/parent/mailauth/views.py b/parent/mailauth/views.py
index 0c9365e7..5eaf4107 100644
--- a/parent/mailauth/views.py
+++ b/parent/mailauth/views.py
@@ -14,7 +14,7 @@ def link_verify(request, token):
 
     # upon successful authentication, the lab app should respond with a session token
     if not ok or "session_token" not in response:
-        messages.error(request, _("parent:error:login_failed"))
+        messages.error(request, response.get("reason", _("parent:error:login_failed")))
         return redirect("home")
 
     request.session["token"] = response["session_token"]
diff --git a/parent/parent/locale/nl/LC_MESSAGES/django.po b/parent/parent/locale/nl/LC_MESSAGES/django.po
index 6aeba2fe..2207a838 100644
--- a/parent/parent/locale/nl/LC_MESSAGES/django.po
+++ b/parent/parent/locale/nl/LC_MESSAGES/django.po
@@ -396,8 +396,8 @@ msgstr ""
 "Het is niet gelukt om u uit te schirjven. Neem alstublieft contact met ons "
 "op via e-mail: babylab.ilslabs@uu.nl"
 
-#~ msgid "parent:error:login_failed"
-#~ msgstr "Inloggen is mislukt, probeer het later opnieuw"
+msgid "parent:error:login_failed"
+msgstr "Er is een fout opgetreden tijdens het inloggen"
 
 msgid "parent:appointment:canceled"
 msgstr "Geannuleerd"
\ No newline at end of file
diff --git a/parent/parent/views.py b/parent/parent/views.py
index c5f6a254..5ed5cc5c 100644
--- a/parent/parent/views.py
+++ b/parent/parent/views.py
@@ -5,6 +5,7 @@
 from cdh.rest import client as rest
 from django.contrib import messages
 from django.http.response import JsonResponse
+from django.utils.safestring import mark_safe
 from django.shortcuts import redirect, render
 from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
@@ -81,7 +82,7 @@ def signup_verify(request, token):
     ok, result = gateway(request, f"/gateway/signup/verify/{token}")
     if ok:
         return render(request, "signup_confirmed.html")
-    messages.error(request, _("parent:error:signup_verify"))
+    messages.error(request, mark_safe(result.get("reason", _("parent:error:signup_verify"))))
     return redirect("home")