Repeated Email Delivery Issue with Mail::later() in Laravel v11.10

[jstarfruits]

I am using Laravel v11.10 with Redis for queue management.

I scheduled emails to be sent to users at 8 AM using Mail::later(). It took over an hour to complete all the email deliveries. Then, at 9 AM, all the emails started being sent again, and the same thing repeated at 10 AM. By 11 AM, I received the error App\Mail\Mail has been attempted too many times., indicating that it failed after 3 retries. There were no errors in the email sending process itself, so I suspect the retries are due to timeouts.

I believe the email delivery jobs created by Mail::later() are managed as a single job, and the next job starts before the previous one finishes.

The redis.retry_after setting in queue.php is 90 minutes, which seems a bit different from the issue I’m experiencing. I am currently tracing the source, but I haven’t identified the cause yet.

Could anyone provide insights or advice on what might be causing this issue and what to look out for?