diff --git a/CHANGELOG.md b/CHANGELOG.md
index a15edc489..22f26d2d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -78,4 +78,5 @@ Please add a _short_ line describing the PR you make, if the PR implements a spe
 - New endpoint for adding a message of the day to the database ([#1136](https://github.com/ScilifelabDataCentre/dds_web/pull/1136))
 - Patch: Custom error for PI email validation ([#1146](https://github.com/ScilifelabDataCentre/dds_web/pull/1146))
 - New Data Delivery System logo ([#1148](https://github.com/ScilifelabDataCentre/dds_web/pull/1148))
+- Cronjob: Scheduled task for deleting unanswered invites after a week ([#1147](https://github.com/ScilifelabDataCentre/dds_web/pull/1147))
 - Checkbox in registration form and policy to agree to ([#1151](https://github.com/ScilifelabDataCentre/dds_web/pull/1151))
diff --git a/dds_web/database/models.py b/dds_web/database/models.py
index 7f7a136e4..54fc1d590 100644
--- a/dds_web/database/models.py
+++ b/dds_web/database/models.py
@@ -726,6 +726,7 @@ class Invite(db.Model):
     nonce = db.Column(db.LargeBinary(12), default=None)
     public_key = db.Column(db.LargeBinary(300), default=None)
     private_key = db.Column(db.LargeBinary(300), default=None)
+    created_at = db.Column(db.DateTime(), nullable=False, default=dds_web.utils.current_time())
 
     @property
     def projects(self):
diff --git a/dds_web/scheduled_tasks.py b/dds_web/scheduled_tasks.py
index 123e65a95..70c717868 100644
--- a/dds_web/scheduled_tasks.py
+++ b/dds_web/scheduled_tasks.py
@@ -1,3 +1,5 @@
+from datetime import datetime, timedelta
+
 import flask_apscheduler
 import flask
 
@@ -167,3 +169,40 @@ def set_expired_to_archived():
                 )
                 for proj in errors[unit].keys():
                     scheduler.app.logger.error(f"Error for project '{proj}': {errors[unit][proj]} ")
+
+
+@scheduler.task("cron", id="delete_invite", hour=0, minute=1, misfire_grace_time=3600)
+def delete_invite():
+    """Delete invite older than a week"""
+
+    scheduler.app.logger.debug("Task: Checking for invites to delete.")
+
+    from sqlalchemy.exc import OperationalError, SQLAlchemyError
+    from dds_web import db
+    from dds_web.database import models
+    from dds_web.errors import DatabaseError
+    from dds_web.utils import current_time
+
+    with scheduler.app.app_context():
+        expiration: datetime.datetime = current_time()
+        errors: Dict = {}
+
+        try:
+            invites: list = db.session.query(models.Invite).all()
+            for invite in invites:
+                if (invite.created_at + timedelta(weeks=1)) < expiration:
+                    try:
+                        db.session.delete(invite)
+                        db.session.commit()
+                        scheduler.app.logger.debug("Invite deleted.")
+                    except (OperationalError, SQLAlchemyError) as err:
+                        errors[invite] = str(err)
+                        scheduler.app.logger.exception(err)
+                        db.session.rollback()
+                        continue
+        except (OperationalError, SQLAlchemyError) as err:
+            scheduler.app.logger.exception(err)
+            raise
+
+        for invite, error in errors.items():
+            scheduler.app.logger.error(f"{invite} not deleted: {error}")
diff --git a/migrations/versions/1fbd604872e9_add_column_created_at.py b/migrations/versions/1fbd604872e9_add_column_created_at.py
new file mode 100644
index 000000000..eaaa5b672
--- /dev/null
+++ b/migrations/versions/1fbd604872e9_add_column_created_at.py
@@ -0,0 +1,28 @@
+"""add_column_created_at
+
+Revision ID: 1fbd604872e9
+Revises: 19b877061c98
+Create Date: 2022-04-08 14:32:26.800385
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+from dds_web.utils import current_time
+
+# revision identifiers, used by Alembic.
+revision = "1fbd604872e9"
+down_revision = "19b877061c98"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column(
+        "invites", sa.Column("created_at", sa.DateTime(), nullable=False, default=current_time())
+    )
+
+
+def downgrade():
+    op.drop_column("invites", "created_at")
diff --git a/tests/conftest.py b/tests/conftest.py
index b5c3e0a4c..da80e8fa3 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -319,7 +319,11 @@ def demo_data():
             ),
         )
 
-    invites = [Invite(**{"email": "existing_invite_email@mailtrap.io", "role": "Researcher"})]
+    invites = [
+        Invite(**{"email": "existing_invite_email@mailtrap.io", "role": "Researcher"}),
+        Invite(**{"email": "existing_expired_invite_email@mailtrap.io", "role": "Researcher"}),
+    ]
+    invites[1].created_at = dds_web.utils.current_time() - datetime.timedelta(weeks=1)
 
     return (units, users, projects, invites, files_and_versions)
 
@@ -420,6 +424,7 @@ def add_data_to_db():
     units[0].projects.extend(projects)
     units[0].users.extend([users[2], users[3], users[4]])
     units[0].invites.append(invites[0])
+    units[0].invites.append(invites[1])
 
     units[1].users.extend([users[8], users[9]])
 
diff --git a/tests/test_scheduled_tasks.py b/tests/test_scheduled_tasks.py
new file mode 100644
index 000000000..31abaf573
--- /dev/null
+++ b/tests/test_scheduled_tasks.py
@@ -0,0 +1,14 @@
+import flask
+
+import pytest
+
+from dds_web import db
+from dds_web.database import models
+
+from dds_web.scheduled_tasks import delete_invite
+
+
+def test_delete_invite(client: flask.testing.FlaskClient) -> None:
+    assert len(db.session.query(models.Invite).all()) == 2
+    delete_invite()
+    assert len(db.session.query(models.Invite).all()) == 1