diff --git a/app.json b/app.json
index 4f22859..aa85a14 100644
--- a/app.json
+++ b/app.json
@@ -33,6 +33,9 @@
         "MAILER_FROM_ADDRESS": {
             "description": "The email address your application will use as the default sender.",
             "required": true
+        },
+        "PRIMARY_SITE_URL": {
+            "description": "The URL of your primary Craft CMS site. This is used to generate URLs for email verification, password reset, etc.",
         }
     },
     "formation": {
diff --git a/config/project/project.yaml b/config/project/project.yaml
index 6ce6797..bb82091 100644
--- a/config/project/project.yaml
+++ b/config/project/project.yaml
@@ -1,6 +1,6 @@
 dateModified: 1625782418
 email:
-  fromEmail: tparnell8@gmail.com
+  fromEmail: $MAILER_FROM_ADDRESS
   fromName: Heroku
   transportType: craft\mail\transportadapters\Sendmail
 system: