When an item comes back in stock, I expect people who are listed to receive notifications to be sent an email when the product comes back in stock, but they are not.
All other emails are being sent fine.
/cron.php is being called once every 15 minutes via crontab using curl. I have also visited it manually in my browser.
The settings in
System > Configuration > Catalog > Catalog > Product Alerts Run Settings seem good, set to Daily at 15:00:00, with myself as an error contact. I don't get an error email. I've tried numerous time values for this, including +1/-1 hour from current time in case of system time discrepancies.
cron_schedule database table is also empty.
Anything else I'm missing?