Use safe_key in webform emails
I had a similar problem, the solution I found was here: https://drupal.org/node/1340010

If you are using webform v3.x, then you will need to apply patch #19.

If you are using webform v4.x, patch #22 (I have not tried this one).

For me, to apply the patch (on a Linux system), I did the following (adjust the first line to match where your webform module is):

cd /etc/drupal7/all/modules/webform
wget https://drupal.org/files/webform-1340010-19.patch
patch &lt; webform-safe_key.patch


Then I had access to a new token called "%safe_key" that did exactly what I wanted (e.g. "%safe_key[field]" gave me the value of the safe_key in the email, rather than the display value.