Email queue spontaneously switched off

[StickyPixels]

Hi,
I've had this issue recently on two different sites now, so I'm guessing there is a bug somewhere: Email queueing gets randomly switched off for no obvious reason. Emails suddenly stop being sent, and the schedule is switched off alltogether in Email Settings.
I checked and in both cases there has been no interaction that may have caused the issue (like plugin updates or maintenance or anything like that).
It appears to be a recent thing, because one of these sites has been active for years and I never had this issue before. I am using the default Wordpress Email method on both sites.

I found this post in this forum: https://github.com/liedekef/events-made-easy/discussions/331, may this be CRON related?

Hope there is a solution or workaround, but anything to clarify would help.

[liedekef]

The EME option to set queueing to active is calleeme_queue_mailsd "eme_queue_mails". The only place where EME code touches the setting is in the EME options page, tab "Email". And again only if you're in that tab, EME sets/unsets the option based on standard wordpress functions (in fact the wordpress options API takes care of it). And the default is even "1" (meaning "on"). So if something is setting this to 0, it is not an EME bug but something else doing/causing this. If it happens, check your WP database, table wp-options, and search for that option name/value. Maybe it got deleted (and then it is most probably a WP bug).
Edit: this reply is written based on the info in the ticket (no plugin upgrades, no maintenance). Also, no info is given on the used EME version, so this is about all I can say.

[StickyPixels]

Thank you for clarifying, I checked my database but not sure what to look for. Anyway I reset the option earlier so probably the option has been re-added.
Do you think the problem won't happen again if I set another email method, like php email or smtp?

[liedekef]

it's totally unrelated to the email method setting so ...