Is there a way to find out an extension email through dialplan? A variable, function?

I mean, something like the example below:

```
exten => 1234,1,NoOp("Function email")
exten => 1234,n,ReadExten(EXTENSION)
exten => 1234,n,NoOp(Extension e-mail is ${ExtensionEmail(${EXTENSION})} ;<== EXAMPLE
exten => 1234,n,HangUp()
```

thanks!!