diff --git a/docs/install.md b/docs/install.md
index f64ed004d..4edbb74c8 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -73,6 +73,31 @@ Require it with an explicit version constraint allowing its desired stability.
     php spark shield:setup
     ```
 
+2. Configure `app/Config/Email.php` to allow Shield to send emails with the [Email Class](https://codeigniter.com/user_guide/libraries/email.html).
+
+    ```php
+    <?php
+
+    namespace Config;
+
+    use CodeIgniter\Config\BaseConfig;
+
+    class Email extends BaseConfig
+    {
+        /**
+         * @var string
+         */
+        public $fromEmail = 'your_mail@example.com';
+
+        /**
+         * @var string
+         */
+        public $fromName = 'your name';
+
+        // ...
+    }
+    ```
+
 ### Manual Setup
 
 There are a few setup items to do before you can start using Shield in
@@ -134,6 +159,31 @@ your project.
 
     1. Use InnoDB, not MyISAM.
 
+6. Configure `app/Config/Email.php` to allow Shield to send emails.
+
+    ```php
+    <?php
+
+    namespace Config;
+
+    use CodeIgniter\Config\BaseConfig;
+
+    class Email extends BaseConfig
+    {
+        /**
+         * @var string
+         */
+        public $fromEmail = 'your_mail@example.com';
+
+        /**
+         * @var string
+         */
+        public $fromName = 'your name';
+
+        // ...
+    }
+    ```
+
 ## Controller Filters
 The [Controller Filters](https://codeigniter.com/user_guide/incoming/filters.html) you can use to protect your routes the shield provides are:
 
diff --git a/docs/quickstart.md b/docs/quickstart.md
index 7b86b1698..c5b039625 100644
--- a/docs/quickstart.md
+++ b/docs/quickstart.md
@@ -109,6 +109,8 @@ public int $unusedTokenLifetime = YEAR;
 
 ### Enable Account Activation via Email
 
+> **Note** You need to configure `app/Config/Email.php` to allow Shield to send emails. See [Installation](install.md#initial-setup).
+
 By default, once a user registers they have an active account that can be used. You can enable Shield's built-in, email-based activation flow within the `Auth` config file.
 
 ```php
@@ -120,6 +122,8 @@ public array $actions = [
 
 ### Enable Two-Factor Authentication
 
+> **Note** You need to configure `app/Config/Email.php` to allow Shield to send emails. See [Installation](install.md#initial-setup).
+
 Turned off by default, Shield's Email-based 2FA can be enabled by specifying the class to use in the `Auth` config file.
 
 ```php
@@ -131,6 +135,8 @@ public array $actions = [
 
 ### Responding to Magic Link Logins
 
+> **Note** You need to configure `app/Config/Email.php` to allow Shield to send emails. See [Installation](install.md#initial-setup).
+
 Magic Link logins allow a user that has forgotten their password to have an email sent with a unique, one-time login link. Once they've logged in you can decide how to respond. In some cases, you might want to redirect them to a special page where they must choose a new password. In other cases, you might simply want to display a one-time message prompting them to go to their account page and choose a new password.
 
 #### Session Notification