diff --git a/CHANGELOG.md b/CHANGELOG.md
index d1b8a75..943134c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # CHANGELOG
 
+**v0.1.0-alpha.3:**
+- `README.md`: notice about test mode
+- Support for test mode logging
+
 **v0.1.0-alpha.2:**
 - `README.md` cleanup (listing of components)
 - `Image` component now requires only `src`; the other params are optional
diff --git a/README.md b/README.md
index 75e9e42..21e3e88 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,18 @@ There are more examples in the [examples](examples) folder ✨
 > [!NOTE]
 > 🚧 **The SDK is not stable yet.** This API might change as more features are added. Please watch the repo for the changes in the [CHANGELOG](CHANGELOG.md).
 
+## 🏗 Debugging
+
+You can generate _test API keys_ by activating the **Test Mode** in your dashboard. By using these keys, you'll be able to view your fully rendered emails without actually sending them.
+
+When you use a test API key in your SDK, the following output will appear in your logs when you try to send an email:
+
+```log
+Templateless [TEST MODE]: Emailed user@example.com, preview: https://tmpl.sh/ATMxHLX4r9aE
+```
+
+The preview link will display the email, but you must be logged in to Templateless to view it.
+
 ## 🔳 Components
 
 Emails are crafted programmatically by making function calls. There's no dealing with HTML or drag-and-drop builders.
@@ -251,7 +263,7 @@ If you'd like your recipients to be able to read the email in a browser, you can
 
 You can optionally provide the text for the link. If none is provided, default is used: "View in browser"
 
-**This will make the email public to anyone that has access to the link.**
+**Anyone who knows the link will be able to see the email.**
 
 ```php
 Content::builder()
diff --git a/src/Templateless.php b/src/Templateless.php
index 7f2a9e9..f68b864 100644
--- a/src/Templateless.php
+++ b/src/Templateless.php
@@ -82,6 +82,13 @@ public function sendMany($emails)
         } elseif ($statusCode === 200) {
             $responseText = $response->getBody()->getContents();
             $emailResponse = json_decode($responseText, true);
+
+            if (!empty($emailResponse['previews'])) {
+                foreach ($emailResponse['previews'] as $preview) {
+                    echo "Templateless [TEST MODE]: Emailed {$preview['email']}, preview: https://tmpl.sh/{$preview['preview']}\n";
+                }
+            }
+
             if ($emailResponse !== null && isset($emailResponse['emails'])) {
                 return new EmailResponse($emailResponse['emails']);
             } else {