Log in to the CMQ Console and click Queue Service > Queue on the left sidebar.
Select the target queue in the queue list and click Send Messages in the "Operation" column.
Enter the message content and click Send to send a testing message to the recipient. Message Content: enter the content to be sent of at least 1 byte. The maximum length is subject to the set MaxMsgSize attribute. Delayed Delivery: you can enable delayed delivery, and then the message will be sent after the specified delay time, which ranges from 1 second to 1 hour.