I have never done this, but I have a feeling that there is a chance that you can find some way of getting there successfully.
I actually base my feeling on the thread cited by Oliver Salzburg, which does say that an Event ID 26 (Informational) is generated in win7/2008 (probably with volmgr as source) when a fault-tolerant volume is no longer accessible.
It also remarks that Windows 8 adds the more informative new Event id 142 in addition to Event 26.
I think you should try to send yourself for starters all the events generated by volmgr, then filter-out the ones you don't want. However, I don't have a Server 2008 R2 to play with for that,
so cannot give precise instructions.
Below are some links that might help in associating an action with event(s) :
Getting event log contents by email on an event log trigger
E-Mail notification when hard disk full
Run a Task in Response to a Given Event
Using Event Description as criteria for a rule