diff --git a/mailer.js b/mailer.js
index db7c5ca..0b1b72f 100644
--- a/mailer.js
+++ b/mailer.js
@@ -4,7 +4,7 @@
 
 var assert = require('assert'),
     debug = require('debug')('e2e:mailer'),
-    postmark = require('postmark')(process.env.POSTMARK_API_KEY),
+    postmark = require('postmark')(process.env.POSTMARK_API_KEY_TOOLS),
     util = require('util');
 
 exports = module.exports = {