diff --git a/README.md b/README.md
index f13e4ac..3a4995d 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,8 @@
 * `abra app secret insert <app-domain> smtp_password v1 <smtp-password>` (A working SMTP server is required for setup)
 * `abra app secret g -a <app-domain>`
 * `abra app config <app-name>`
-    * Populate SMTP settings by editing env variables that start with `SETTING_EMAIL`
+    * Populate SMTP settings by editing env variables that start with `SETTING_EMAIL`.
+    * Add a valid email to `SETTING_ZULIP_ADMINISTRATOR`, this email will get error and support emails.
 * `abra app deploy <app-name>`