diff --git a/.env.example b/.env.example
index d4e15f07..f1e6b46b 100644
--- a/.env.example
+++ b/.env.example
@@ -1,6 +1,10 @@
 # Used to enable specific features unique to the hosted version of Maybe. There's a very high likelihood that you don't need to change this value.
 HOSTED=false
 
+# App Domain
+# This is the domain that your Maybe instance will be hosted at. It is used to generate links in emails and other places.
+APP_DOMAIN=
+
 # SMTP Configuration
 # This is only needed if you intend on sending emails from your Maybe instance (such as for password resets or email financial reports).
 # Resend.com is a good option that offers a free tier for sending emails.
diff --git a/config/environments/production.rb b/config/environments/production.rb
index 741a98ca..ec74b5c5 100644
--- a/config/environments/production.rb
+++ b/config/environments/production.rb
@@ -67,6 +67,7 @@ Rails.application.configure do
 
   config.action_mailer.perform_caching = false
 
+  config.action_mailer.default_url_options = { host: ENV["APP_DOMAIN"] }
   config.action_mailer.delivery_method = :smtp
   config.action_mailer.smtp_settings = {
     address:              ENV["SMTP_ADDRESS"],