Hmmmm....something else you might look into, unless I'm just being stupid again:
Anything with an X below is checked in the Preferences page of my UCP, the rest are not active. (Only the notification/email options are listed, the rest are removed for clarity)
But I am still getting emails for replies to content I didn't create (threads I didn't start), I only interacted with (posted to), such as this one
https://endless-sphere.com/sphere/t...ca-v3-what-are-sane-temperature-values.122461
https://endless-sphere.com/sphere/threads/milan-sl-velomobile-conversion.122468/
Maybe it considers a post made to a thread to be creating content there so unless you just watch the thread it uses the "create" option and not the "interact" option? If so, that's kinda "broken". (I would expect/prefer an option that only sends emails for threads I started, so I'm not inundated with emails for every thread I post in).
Email options
Receive news and update emails
Receive activity summary email
We will keep you updated about new content when you haven't visited for a while.
X Receive email when a new conversation message is received
Content options
X Automatically watch content you create…
X and receive email notifications
X Automatically watch content you interact with…
and receive email notifications
Receive a notification when someone…
Posts in a watched forum
X Alert
Replies to a watched thread
X Alert
Quotes your message
X Alert
Mentions you in a message
X Alert
Reacts to your message
X Alert
Reacts to your message in a conversation
X Alert