Glad that did what you were looking for.
Mongo will probably not give you the right search results, Mango is the name of the software.
It is not possible in Mango 3.1 but we've added a way to put points into the FTL context in 3.2. I believe releasing that update is not too far away but I can't say for sure.
In previous versions, the way to achieve this is having the event set a point in the context of a meta point, which computes the whole alarm message you would want with whatever points are in context and then this meta point has a change detector that the email is launched from. Or, you can cut out the first event detector and have the meta point take the source data point as its context, and then have the meta point raise the alarm with relevant other data.