max_age

Limits how long a message can remain in the queue. The default value is "7 days".

kumo.on('get_queue_config', function(domain, tenant, campaign, routing_domain)
  return kumo.make_queue_config {
    -- Age out messages after being in the queue for 20 minutes
    max_age = '20 minutes',
  }
end)

Note

If you are using message:set_scheduling() to configure a custom expires timestamp on a per-message basis, then max_age will be ignored for those messages and only your expires timestamp will be considered for expiration.