diff --git a/update_quota2_mariadb.sh b/update_quota2_mariadb.sh
new file mode 100755
index 0000000..d189711
--- /dev/null
+++ b/update_quota2_mariadb.sh
@@ -0,0 +1,96 @@
+#!/usr/bin/env python3
+"""Batch-update quota2 table for all active mailboxes from doveadm quota get."""
+
+import subprocess
+import sys
+
+DOVEADM   = '/usr/local/dovecot/bin/doveadm'
+MYSQL     = 'mysql'
+DB_USER   = 'postfix'
+DB_PASS   = 'T3CJnFMJNX9wmhNs'
+DB_SOCKET = '/run/mysqld/mysqld.sock'
+DB_NAME   = 'postfix'
+
+
+def mysql_query(sql):
+    return subprocess.run(
+        [MYSQL, '-u', DB_USER, '-p' + DB_PASS, '--socket', DB_SOCKET,
+         DB_NAME, '-sNe', sql],
+        capture_output=True, text=True)
+
+
+def get_users(limit=None):
+    query = 'SELECT username FROM mailbox WHERE active = 1 ORDER BY username;'
+    if limit:
+        query = 'SELECT username FROM mailbox WHERE active = 1 ORDER BY username LIMIT %d;' % limit
+    r = mysql_query(query)
+    return [u.strip() for u in r.stdout.strip().split('\n') if u.strip()]
+
+
+def get_quota(user):
+    result = subprocess.run(
+        [DOVEADM, 'quota', 'get', '-u', user],
+        capture_output=True, text=True
+    )
+    bytes_val = None
+    messages_val = None
+    for line in result.stdout.splitlines():
+        parts = line.split()
+        if len(parts) < 4:
+            continue
+        if parts[2] == 'STORAGE' and parts[1] != 'Type':
+            try:
+                bytes_val = int(parts[3]) * 1024
+            except ValueError:
+                bytes_val = 0
+        elif parts[2] == 'MESSAGE' and parts[1] != 'Type':
+            try:
+                messages_val = int(parts[3])
+            except ValueError:
+                messages_val = 0
+    return bytes_val, messages_val
+
+
+def upsert_quota2(user, bytes_val, messages_val):
+    sql = ("REPLACE INTO quota2 (username, bytes, messages) VALUES ('"
+           + user.replace("'", "\'") + "', "
+           + str(bytes_val) + ", " + str(messages_val) + ");")
+    mysql_query(sql)
+
+
+def main():
+    dry_run = '--dry-run' in sys.argv
+    limit = None
+    if '--limit' in sys.argv:
+        idx = sys.argv.index('--limit')
+        try:
+            limit = int(sys.argv[idx + 1])
+        except (IndexError, ValueError):
+            print('Usage: update_quota2.sh [--dry-run] [--limit N]')
+            sys.exit(1)
+
+    users = get_users(limit)
+    total = len(users)
+    print('Processing %d mailboxes...' % total)
+
+    ok = 0
+    skip = 0
+    for i, user in enumerate(users, 1):
+        bytes_val, messages_val = get_quota(user)
+        if bytes_val is None or messages_val is None:
+            print('  [%d/%d] SKIP %s (no quota data)' % (i, total, user))
+            skip += 1
+            continue
+        if dry_run:
+            print('  [%d/%d] DRY  %s: %d bytes, %d messages' % (i, total, user, bytes_val, messages_val))
+        else:
+            upsert_quota2(user, bytes_val, messages_val)
+            if i % 50 == 0 or i == total:
+                print('  [%d/%d] done' % (i, total))
+        ok += 1
+
+    print('Done: %d updated, %d skipped.' % (ok, skip))
+
+
+if __name__ == '__main__':
+    main()