diff --git a/.github/workflows/phpunit.yml b/.github/workflows/phpunit.yml
new file mode 100644
index 0000000..2eae3ca
--- /dev/null
+++ b/.github/workflows/phpunit.yml
@@ -0,0 +1,19 @@
+name: PHP Tests
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["main"]
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install PHP and PHPUnit
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y php phpunit
+      - name: Run PHPUnit
+        run: phpunit
\ No newline at end of file
diff --git a/README.md b/README.md
index 221b54e..29272c0 100755
--- a/README.md
+++ b/README.md
@@ -97,7 +97,23 @@ Screenshots can enhance your article by visually representing instructions. Ensu
 - Crop to focus on relevant elements.
 - Remove unnecessary details.
 
+## Configuration
 
+The contact form uses the `SITE_OWNERS_EMAIL` environment variable to determine
+where submissions are sent. If the variable is not set, emails default to
+`user@website.com`.
+
+### Setting the variable locally
+
+```bash
+export SITE_OWNERS_EMAIL=you@example.com
+```
+
+### Hosting platforms
+
+Most hosting providers allow environment variables to be configured from their
+dashboard. Define `SITE_OWNERS_EMAIL` with your preferred address to receive
+emails from the contact form.
 ## FAQs
 
 ### How do I get involved?
diff --git a/inc/sendEmail.php b/inc/sendEmail.php
index 762509b..a2b55b9 100755
--- a/inc/sendEmail.php
+++ b/inc/sendEmail.php
@@ -1,8 +1,7 @@
 <?php
 
-// Replace this with your own email address
-$siteOwnersEmail = 'user@website.com';
-
+// Replace this with your own email address or set the SITE_OWNERS_EMAIL environment variable
+$siteOwnersEmail = getenv('SITE_OWNERS_EMAIL') ?: 'user@website.com';
 
 if($_POST) {
 
diff --git a/index.html b/index.html
index f20f05f..d123083 100755
--- a/index.html
+++ b/index.html
@@ -393,7 +393,7 @@ <h1 class="display-2 display-2--light">This is what the folks from other program
                 <div class="eachdiv div1">
                   <div class="userdetails">
                     <div class="imgbox">
-                      <img src="./images/testimonials/sanskriti.jpg" alt="">
+                      <img src="./images/testimonials/sanskriti.jpg" alt="Sanskriti Harmukh">
                     </div>
                     <div class="detbox">
                       <p class="name">Sanskriti Harmukh (GCE)</p>
@@ -409,7 +409,7 @@ <h4>If you are someone who is looking forward to stepping into the domain of Dev
                 <div class="eachdiv div2">
                   <div class="userdetails" style="margin-top:-10px !important">
                     <div class="imgbox">
-                      <img src="./images/testimonials/animesh.jpg" alt="">
+                      <img src="./images/testimonials/animesh.jpg" alt="Animesh Pathak">
                     </div>
                     <div class="detbox">
                       <p class="name" style="font-size:16px; text-align: left;">Animesh Pathak (Gold MLSA)</p>
diff --git a/phpunit.xml b/phpunit.xml
new file mode 100644
index 0000000..afd84a2
--- /dev/null
+++ b/phpunit.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit>
+    <testsuites>
+        <testsuite name="Application Test Suite">
+            <directory suffix="Test.php">tests</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>
\ No newline at end of file
diff --git a/tests/send_email.php b/tests/send_email.php
new file mode 100644
index 0000000..b317366
--- /dev/null
+++ b/tests/send_email.php
@@ -0,0 +1,13 @@
+<?php
+use PHPUnit\Framework\TestCase;
+
+class SendEmailTest extends TestCase
+{
+    public function testEnvOverridesDefault()
+    {
+        $_ENV['SITE_OWNERS_EMAIL'] = 'test@example.com';
+        putenv('SITE_OWNERS_EMAIL=test@example.com');
+        require __DIR__ . '/../inc/sendEmail.php';
+        $this->assertSame('test@example.com', $siteOwnersEmail);
+    }
+}
\ No newline at end of file