Is the plugin really needed?

[nugoamcs]

After I installed and enabled the plugin, it works as described. Delayed messages from delayed queue was moved to the respective queues. But without enabled plugin it works in the same way. I only had to declare the exchange type as direct instead of x-delayed-message. That why I haven't understand why I need the plugin. I use RabbitMQ 3.13.7.

[michaelklishin]

If you want published messages to be delayed and re-published at a later point, you do need this plugin or a future version of Tanzu RabbitMQ (4.2) with an alternative scheduling feature.

Some abuse Dead Lettering for scheduling. That's an option, too.