diff --git a/README.md b/README.md
index 93a449f..8e8d48e 100644
--- a/README.md
+++ b/README.md
@@ -59,6 +59,10 @@ The backend, frontend and workers have hot-reloading enabled, so changes made to
 
 Once all containers have started, visit http://libre-wedding-planner.app.localhost/dashboard to load the application.
 
+## Email delivery
+
+In the development environment, real emails will not be sent. You can visit http://libre-wedding-planner.app.localhost/letter_opener/ to get a list of emails generated by the application.
+
 ## Testing
 
 Unit tests can be executed with