It can be disabled in user settings.
I want the latest post at the top, and with the default settings, the post at the top is the first post in the thread. Is there any way to disable that behaviour?
Is there any way to make all users within a group to subscribe to certain categories?
For the sake of completeness, here is how I solved it.
I'm not very proud of the solution but it works.
In the emailer plugin, I added this bit to mailOptions variable.
Now I need to be very careful not to update the plugin and overwrite the index.js file