“Sending time window” preventing newsletter from being sent

[Stéphane Debove]

I usually send my newsletter by scheduling it at 9PM and it works perfectly.

As I needed to send one over multiple days, I tried activating the “Sending time window” option in Settings > sending, to send it between 9 PM and 3AM.

This prevented the newsletter to be sent at all. Newsletter got stuck with status “Sending” but no email was ever delivered.

What could be the cause of that ?
Thanks

[Michael]

Hello Stephane,
sorry for the delay. I’ll check this with our devs and get back to you. We never saw this kind of behaviour so we’ll need to investigate a bit.

Michael

[Michael]

Can you please send me a screenshot of your scheduling settings?

Thanks

[Stéphane Debove]

Hi,
I can’t seem to be able to add images to this thread? But in text version the settings would be (if you mean the settings in Settings > Sending):

Max emails per hour
50 (min. 12)

Delay between emails
0 milliseconds

Sending time window
Enabled
from 21:00 to 07:00

[Michael]

Hello Stephanie,

those settings seem ok, another couple of questions:

1. Are the date/hour/timezone settings in your website right? You can check those from WordPress settings.
2. When you hit send, is the sending counter progressing or does it stay stuck on 0/0 ?

Michael

[Stéphane Debove]

Hi,
1. yes they are correct
2. counter stays at 0/0

[Michael]

Hello Stephane,

we’re still checking for potential issues in send time window feature, I’ll get back to you as soon as possible.

Michael

[Stefano]

Hi,
if your counter is 0/0 it means there are no targeted subscribers (and the newsletter should be set as sent almost immediately). The counter should be 0/nnn.

Could you check the targeting criteria set on that newsletter?

[Stéphane Debove]

Hi,
I said 0/0 because that’s what Michael wrote, but the counter is 0/nnn.

[Stefano]

Ok, since the time window is ok and you don’t have a message on the admin side about the scheduler not working, could you check on Help/Scheduler if something is reported?
Then you should enable the debug logging, changing the logging level on Settings/Advanced to “debug”.

If there is a newsletter in Sending status, a log file should be generated and readabel under Help/Logs, named “engine-xxx.txt”. There we can find information about the engine (if it’s running, possible blocks, and the like).

Could you even check if you have an old extension/addon named “Newsletter Speedcontrol” installed? It’s improbable, but…

[Stéphane Debove]

Hello,
no extension named “newsletter speedcontrol”.
Nothing reported on Help/Scheduler.
I enabled debug logging and tried again. I don’t know how to send you the txt log so here it is:

30-07-2026 19:24:05 – FATAL – 9.3.0 – 6918 – 96,6 Mo/256 Mo – [cron] > Delivery engine lock already set: can be due to concurrent executions or fatal error during delivery
30-07-2026 19:29:53 – DEBUG – 9.3.0 – 7392 – 96,8 Mo/256 Mo – [cron] > START
30-07-2026 19:29:53 – DEBUG – 9.3.0 – 7392 – 96,8 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:29:53 – DEBUG – 9.3.0 – 7392 – 96,8 Mo/256 Mo – [cron] > Old lock, ignoring
30-07-2026 19:29:53 – DEBUG – 9.3.0 – 7392 – 96,8 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:29:53 – DEBUG – 9.3.0 – 7392 – 96,8 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:29:53 – DEBUG – 9.3.0 – 7392 – 96,8 Mo/256 Mo – [cron] > END
30-07-2026 19:34:41 – DEBUG – 9.3.0 – 9568 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 19:34:41 – DEBUG – 9.3.0 – 9568 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:34:41 – DEBUG – 9.3.0 – 9568 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 19:34:41 – DEBUG – 9.3.0 – 9568 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:34:41 – DEBUG – 9.3.0 – 9568 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:34:41 – DEBUG – 9.3.0 – 9568 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 19:39:43 – DEBUG – 9.3.0 – 4536 – 100,5 Mo/256 Mo – [cron] > START
30-07-2026 19:39:43 – DEBUG – 9.3.0 – 4536 – 100,5 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:39:43 – DEBUG – 9.3.0 – 4536 – 100,5 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 19:39:43 – DEBUG – 9.3.0 – 4536 – 100,5 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:39:43 – DEBUG – 9.3.0 – 4536 – 100,5 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:39:43 – DEBUG – 9.3.0 – 4536 – 100,5 Mo/256 Mo – [cron] > END
30-07-2026 19:44:11 – DEBUG – 9.3.0 – 1456 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 19:44:11 – DEBUG – 9.3.0 – 1456 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:44:11 – DEBUG – 9.3.0 – 1456 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 19:44:11 – DEBUG – 9.3.0 – 1456 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:44:11 – DEBUG – 9.3.0 – 1456 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:44:11 – DEBUG – 9.3.0 – 1456 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 19:49:15 – DEBUG – 9.3.0 – 5260 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 19:49:15 – DEBUG – 9.3.0 – 5260 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:49:15 – DEBUG – 9.3.0 – 5260 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 19:49:15 – DEBUG – 9.3.0 – 5260 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:49:15 – DEBUG – 9.3.0 – 5260 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:49:15 – DEBUG – 9.3.0 – 5260 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 19:54:13 – DEBUG – 9.3.0 – 7886 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 19:54:13 – DEBUG – 9.3.0 – 7886 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:54:13 – DEBUG – 9.3.0 – 7886 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 19:54:13 – DEBUG – 9.3.0 – 7886 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:54:13 – DEBUG – 9.3.0 – 7886 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:54:13 – DEBUG – 9.3.0 – 7886 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 19:59:41 – DEBUG – 9.3.0 – 1677 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 19:59:41 – DEBUG – 9.3.0 – 1677 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 19:59:41 – DEBUG – 9.3.0 – 1677 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 19:59:41 – DEBUG – 9.3.0 – 1677 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 19:59:41 – DEBUG – 9.3.0 – 1677 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 19:59:41 – DEBUG – 9.3.0 – 1677 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:04:16 – DEBUG – 9.3.0 – 5700 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:04:16 – DEBUG – 9.3.0 – 5700 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:04:16 – DEBUG – 9.3.0 – 5700 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:04:16 – DEBUG – 9.3.0 – 5700 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:04:16 – DEBUG – 9.3.0 – 5700 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:04:16 – DEBUG – 9.3.0 – 5700 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:09:21 – DEBUG – 9.3.0 – 4567 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:09:21 – DEBUG – 9.3.0 – 4567 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:09:21 – DEBUG – 9.3.0 – 4567 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:09:21 – DEBUG – 9.3.0 – 4567 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:09:21 – DEBUG – 9.3.0 – 4567 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:09:21 – DEBUG – 9.3.0 – 4567 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:14:41 – DEBUG – 9.3.0 – 9093 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:14:41 – DEBUG – 9.3.0 – 9093 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:14:41 – DEBUG – 9.3.0 – 9093 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:14:41 – DEBUG – 9.3.0 – 9093 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:14:41 – DEBUG – 9.3.0 – 9093 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:14:41 – DEBUG – 9.3.0 – 9093 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:19:14 – DEBUG – 9.3.0 – 9431 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:19:14 – DEBUG – 9.3.0 – 9431 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:19:14 – DEBUG – 9.3.0 – 9431 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:19:14 – DEBUG – 9.3.0 – 9431 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:19:14 – DEBUG – 9.3.0 – 9431 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:19:14 – DEBUG – 9.3.0 – 9431 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:24:41 – DEBUG – 9.3.0 – 6091 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:24:41 – DEBUG – 9.3.0 – 6091 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:24:41 – DEBUG – 9.3.0 – 6091 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:24:41 – DEBUG – 9.3.0 – 6091 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:24:41 – DEBUG – 9.3.0 – 6091 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:24:41 – DEBUG – 9.3.0 – 6091 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:29:41 – DEBUG – 9.3.0 – 4684 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:29:41 – DEBUG – 9.3.0 – 4684 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:29:41 – DEBUG – 9.3.0 – 4684 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:29:41 – DEBUG – 9.3.0 – 4684 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:29:41 – DEBUG – 9.3.0 – 4684 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:29:42 – DEBUG – 9.3.0 – 4684 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:34:07 – DEBUG – 9.3.0 – 9818 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:34:07 – DEBUG – 9.3.0 – 9818 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:34:07 – DEBUG – 9.3.0 – 9818 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:34:07 – DEBUG – 9.3.0 – 9818 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:34:07 – DEBUG – 9.3.0 – 9818 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:34:07 – DEBUG – 9.3.0 – 9818 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:40:42 – DEBUG – 9.3.0 – 5437 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:40:42 – DEBUG – 9.3.0 – 5437 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:40:42 – DEBUG – 9.3.0 – 5437 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:40:42 – DEBUG – 9.3.0 – 5437 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:40:42 – DEBUG – 9.3.0 – 5437 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:40:42 – DEBUG – 9.3.0 – 5437 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:44:12 – DEBUG – 9.3.0 – 1994 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:44:12 – DEBUG – 9.3.0 – 1994 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:44:12 – DEBUG – 9.3.0 – 1994 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:44:12 – DEBUG – 9.3.0 – 1994 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:44:12 – DEBUG – 9.3.0 – 1994 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:44:12 – DEBUG – 9.3.0 – 1994 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:49:10 – DEBUG – 9.3.0 – 8806 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:49:10 – DEBUG – 9.3.0 – 8806 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:49:10 – DEBUG – 9.3.0 – 8806 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:49:10 – DEBUG – 9.3.0 – 8806 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:49:10 – DEBUG – 9.3.0 – 8806 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:49:10 – DEBUG – 9.3.0 – 8806 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:54:11 – DEBUG – 9.3.0 – 9457 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:54:11 – DEBUG – 9.3.0 – 9457 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:54:11 – DEBUG – 9.3.0 – 9457 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:54:11 – DEBUG – 9.3.0 – 9457 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:54:11 – DEBUG – 9.3.0 – 9457 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:54:11 – DEBUG – 9.3.0 – 9457 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 20:59:11 – DEBUG – 9.3.0 – 6296 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 20:59:11 – DEBUG – 9.3.0 – 6296 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 20:59:11 – DEBUG – 9.3.0 – 6296 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 20:59:11 – DEBUG – 9.3.0 – 6296 – 96,6 Mo/256 Mo – [cron] > 0 newsletter to be processed
30-07-2026 20:59:11 – DEBUG – 9.3.0 – 6296 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 20:59:11 – DEBUG – 9.3.0 – 6296 – 96,5 Mo/256 Mo – [cron] > END
30-07-2026 21:04:22 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:04:22 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:04:22 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:04:23 – INFO – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:04:23 – INFO – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:04:23 – DEBUG – 9.3.0 – 5073 – 96,6 Mo/256 Mo – [cron] > END
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > START
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:10:09 – INFO – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:10:09 – INFO – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:10:09 – DEBUG – 9.3.0 – 4624 – 96,8 Mo/256 Mo – [cron] > END
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:14:54 – INFO – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:14:54 – INFO – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:14:54 – DEBUG – 9.3.0 – 5831 – 96,6 Mo/256 Mo – [cron] > END
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:19:05 – INFO – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:19:05 – INFO – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:19:05 – DEBUG – 9.3.0 – 8614 – 96,6 Mo/256 Mo – [cron] > END
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:24:50 – INFO – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:24:50 – INFO – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:24:50 – DEBUG – 9.3.0 – 1894 – 96,6 Mo/256 Mo – [cron] > END
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:29:24 – INFO – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:29:24 – INFO – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:29:24 – DEBUG – 9.3.0 – 9670 – 96,6 Mo/256 Mo – [cron] > END
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:34:29 – INFO – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:34:29 – INFO – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:34:29 – DEBUG – 9.3.0 – 8254 – 96,6 Mo/256 Mo – [cron] > END
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > START
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Setting engine lock 300
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Lock set to zero
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > 1 newsletter to be processed
30-07-2026 21:39:48 – INFO – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Starting newsletter 77
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Setting up (once)
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Max emails: 4
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Max time set to 285
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Global schedule: yes
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Start: 21
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > End: 6
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Skip: true
30-07-2026 21:39:48 – INFO – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Out of the sending time window
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > Reset engine lock
30-07-2026 21:39:48 – DEBUG – 9.3.0 – 3536 – 96,6 Mo/256 Mo – [cron] > END

thanks

[Stefano]

Hi, in the last part of the log, the sending is blocked by the window configuration. Don’t pay attention to the timestamp of the log, it is a UTC+0 time.
Which is the timezone set on your site? See the WP Settings/Timazone.

[Stéphane Debove]

My timezone is Paris. At the moment:
Universal time is 2026-07-31 07:11:02.
Local time is 2026-07-31 09:11:02.

[Stefano]

ok, there is a bug, I’m fixing it.

[Author]

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