We’ve just had a situation on a forum where we’ve had a user post to a category being watched by other users. However, given the nature of their query, it was converted to a PM within 3 minutes by a moderator.
Although it was converted to a PM, it seems to have still triggered an email to those watching the category it was originally posted to, which doesn’t seem right to me. I would have expected the email not to have been sent as it was converted to a private/personal message.
Moderator converts B’s post into a PM between just them and B, in a short space of time (e.g. < 5 mins)
User A still receives an email notifying them of the new post x minutes after the post was created
I’ve managed to replicate it using 2 test accounts. The email is still sent to User A (but they can’t view the full message if they click into it).
I’m no Discourse expert, but from what I can see the topic triggers the scheduled job in Sidekiq which is then sent x minutes after the topic was made.
At the point of being converted to a PM, the email is still sat in Sidekiq. I’m not going to say I’m a Discourse expert, or even say I understand how it works (because I don’t - I just love its format and a member of several Discourse powered sites), so I’m not sure if it could be prevented.
Perhaps a timeline of events could help explain the situation:
5:20pm - User A posts publicly
5:21pm - Mod converts post to a PM
5:30pm - User B receives the “New post” email, with a subject of [Site Site][PM] New Topic
Just after the post was converted, there was a Jobs::UserEmail event in Sidekiq for the new topic.
Only speaking for myself (hosted by Discourse), it seems like my emails land pretty much immediately after a post. I have mailing list mode turned on, send me mail even if I’m on the site, that sort of thing. You might be able to call it back if it hadn’t been sent, but that seems like a race. In this case it was close, but if it had happened after the mod had logged off it likely would have sat there much longer.
The defaults (configurable via site settings) are 20 seconds after posting for personal message notifications, and 10 minutes for all other notifications. The relevant site settings are personal email time window seconds and email time window mins.