vault store query

hi

we are using EV 8sp5

is it possible to get the the date of the oldest and youngest email in a vault store ?

EG - if an email was ingested on 5th Jan 2015 but the actual creation date of that email is 25th Oct 2011, is it possible to get the original mail creation date from EV of the oldest and youngest mails?

we want to be able to say to person X that we have emails from "this date" to "that date"

thanks