diff --git a/init_app.py b/init_app.py
new file mode 100644
index 00000000..a5b255ef
--- /dev/null
+++ b/init_app.py
@@ -0,0 +1,28 @@
+"""Initial loading script"""
+from app.models import Mailbox
+from app.log import LOG
+from app.extensions import db
+from app.pgp_utils import load_public_key
+from server import create_app
+
+
+def load_pgp_public_keys(app):
+    """Load PGP public key to keyring"""
+    with app.app_context():
+        for mailbox in Mailbox.query.filter(Mailbox.pgp_public_key != None).all():
+            LOG.d("Load PGP key for mailbox %s", mailbox)
+            fingerprint = load_public_key(mailbox.pgp_public_key)
+
+            # sanity check
+            if fingerprint != mailbox.pgp_finger_print:
+                LOG.error("fingerprint %s different for mailbox %s", fingerprint, mailbox)
+                mailbox.pgp_finger_print = fingerprint
+
+        db.session.commit()
+
+
+if __name__ == "__main__":
+    app = create_app()
+
+    with app.app_context():
+        load_pgp_public_keys(app)