Ah, not really... topic subscriptions are considered (in my opinion) user private data, and that is not shared by default.
You could instruct your users to adjust their settings if they are being notified about a specific topic too often:
Sorry forgot this one, mail notification settings says
"Send an email if a new chat message arrives and I am not online"
And I receive one even if I'm connected (but not on same tab) which does not match option configuration
Did that successfully. Upgrade seemed to go ok, then received these errors trying to start nodebb, it's like the upgrade script didn't work: ( Can I reinstall the latest version of nodebb, and have it keep my setup, users, posts etc., or does a clean install initialize Mongodb?)
"./nodebb stop" to stop the NodeBB server
"./nodebb log" to view server output
"./nodebb restart" to restart NodeBB
ljhardy@firehole:~/www/nodebb/nodebb$ ./nodebb log
Type Ctrl-C to exit
Clustering enabled: Spinning up 1 process(es).
27/3 10:24  - info: Time: Sun Mar 27 2016 10:24:35 GMT-0500 (CDT)
27/3 10:24  - info: Initializing NodeBB v1.0.2
27/3 10:24  - warn: You have no mongo password setup!
27/3 10:24  - info: [database] Checking database indices.
[outdated] html-to-text installed v1.5.0, package.json requires 2.0.0
27/3 10:24  - warn: One or more of NodeBB's dependent packages are out-of-date. Please run the following command to update them:
27/3 10:24  - warn: ./nodebb upgrade
[cluster] Child Process (20828) has exited (code: 0, signal: null)