Slow down mail tasks some more to ensure they actually complete.
ApplicationError 1 might occur when mails are being sent too fast.
#!/usr/bin/env python
"""
Daily cleanup job.
Can be run as a cronjob to clean out old data from the database (only expired
sessions at the moment).
"""
from django.core import management
if __name__ == "__main__":
management.call_command('cleanup')