How to set auto subscribed al topic for all member ?

[jlengend]

Hi,
How to set auto subscribed al topic for all member ? I mean, when some member reply to a topic, they will get auto subscribed via email.
Some forum like digiltaglpoint do that, so i want to know :)
Thank you

[Videx]

I think there's a pre-defined SQL query for that.? AdminCP>Maintenance>Execute SQL Query>Instant email notification

Be careful though. If everyone is getting emails you will likely a) upset less experienced users and b) exceed server email limits.