Add event handlers per domain for switching mail service on/off
It'd be really useful to be able to call handlers for when the mail service for a domain is switched on/off. The only variable needed is probably the domain name. The on/off handlers should be available for both domain and subdomain.
We've seen some increased interest in this feature and are re-opening voting for it. Please vote for this feature if you think you need an event that is triggered when mail service is turned on or off.