diff --git a/CLAUDE.md b/CLAUDE.md
index abe4344..27e31cd 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -257,6 +257,7 @@ Global configuration in `comics_data.py`:
 - `USE_HEADER_NAV_ICONS`: Set to True to display icons next to main header navigation text (uses alert.png, archive.png, info.png)
 - `USE_FOOTER_SOCIAL_ICONS`: Set to True to use icons instead of text for footer social links (uses instagram.png, youtube.png, mail.png, alert.png)
 - `NEWSLETTER_ENABLED`: Set to True to show newsletter section in footer
+- `NEWSLETTER_HTML`: Custom HTML for newsletter form (user pastes their service's form code here)
 - `SOCIAL_INSTAGRAM`: Instagram URL (set to None to hide)
 - `SOCIAL_YOUTUBE`: YouTube URL (set to None to hide)
 - `SOCIAL_EMAIL`: Email mailto link (set to None to hide)
@@ -318,6 +319,7 @@ Global context variables injected into all templates:
 - `use_header_nav_icons`: Boolean for main header navigation icons from `comics_data.py`
 - `use_footer_social_icons`: Boolean for footer social link icons from `comics_data.py`
 - `newsletter_enabled`: Boolean to show/hide newsletter section from `comics_data.py`
+- `newsletter_html`: Custom HTML for newsletter form from `comics_data.py` (rendered with `| safe` filter)
 - `social_instagram`: Instagram URL from `comics_data.py`
 - `social_youtube`: YouTube URL from `comics_data.py`
 - `social_email`: Email link from `comics_data.py`
diff --git a/app.py b/app.py
index cd13116..2c33188 100644
--- a/app.py
+++ b/app.py
@@ -9,7 +9,8 @@ from flask import Flask, render_template, abort, jsonify, request
 from comics_data import (
     COMICS, COMIC_NAME, COPYRIGHT_NAME, SITE_URL, CDN_URL, FULL_WIDTH_DEFAULT, PLAIN_DEFAULT, LOGO_IMAGE, LOGO_MODE,
     HEADER_IMAGE, FOOTER_IMAGE, BANNER_IMAGE, COMPACT_FOOTER, ARCHIVE_FULL_WIDTH, SECTIONS_ENABLED,
-    USE_COMIC_NAV_ICONS, USE_HEADER_NAV_ICONS, USE_FOOTER_SOCIAL_ICONS, USE_SHARE_ICONS, NEWSLETTER_ENABLED,
+    USE_COMIC_NAV_ICONS, USE_HEADER_NAV_ICONS, USE_FOOTER_SOCIAL_ICONS, USE_SHARE_ICONS,
+    NEWSLETTER_ENABLED, NEWSLETTER_HTML,
     SOCIAL_INSTAGRAM, SOCIAL_YOUTUBE, SOCIAL_EMAIL, API_SPEC_LINK, EMBED_ENABLED, PERMALINK_ENABLED
 )
 import markdown
@@ -72,6 +73,7 @@ def inject_global_settings():
         'use_footer_social_icons': USE_FOOTER_SOCIAL_ICONS,
         'use_share_icons': USE_SHARE_ICONS,
         'newsletter_enabled': NEWSLETTER_ENABLED,
+        'newsletter_html': NEWSLETTER_HTML,
         'social_instagram': SOCIAL_INSTAGRAM,
         'social_youtube': SOCIAL_YOUTUBE,
         'social_email': SOCIAL_EMAIL,
diff --git a/comics_data.py b/comics_data.py
index b93a3f6..0112fdc 100644
--- a/comics_data.py
+++ b/comics_data.py
@@ -86,6 +86,17 @@ USE_SHARE_ICONS = True
 # Global setting: Set to True to show newsletter section in footer
 NEWSLETTER_ENABLED = False
 
+# Global setting: Custom HTML for newsletter form (only used if NEWSLETTER_ENABLED is True)
+# Paste your newsletter service's form HTML here (Mailchimp, ConvertKit, Buttondown, etc.)
+# Example:
+# NEWSLETTER_HTML = '''
+# <form action="https://yourservice.com/subscribe" method="post" class="newsletter-form">
+#     <input type="email" name="email" placeholder="Enter your email" required>
+#     <button type="submit">Subscribe</button>
+# </form>
+# '''
+NEWSLETTER_HTML = '<p class="newsletter-placeholder">Newsletter coming soon!</p>'
+
 # Social media links - set to None to hide the link
 SOCIAL_INSTAGRAM = None  # e.g., 'https://instagram.com/yourhandle'
 SOCIAL_YOUTUBE = None    # e.g., 'https://youtube.com/@yourchannel'
diff --git a/comics_data.py.example b/comics_data.py.example
index b93a3f6..0112fdc 100644
--- a/comics_data.py.example
+++ b/comics_data.py.example
@@ -86,6 +86,17 @@ USE_SHARE_ICONS = True
 # Global setting: Set to True to show newsletter section in footer
 NEWSLETTER_ENABLED = False
 
+# Global setting: Custom HTML for newsletter form (only used if NEWSLETTER_ENABLED is True)
+# Paste your newsletter service's form HTML here (Mailchimp, ConvertKit, Buttondown, etc.)
+# Example:
+# NEWSLETTER_HTML = '''
+# <form action="https://yourservice.com/subscribe" method="post" class="newsletter-form">
+#     <input type="email" name="email" placeholder="Enter your email" required>
+#     <button type="submit">Subscribe</button>
+# </form>
+# '''
+NEWSLETTER_HTML = '<p class="newsletter-placeholder">Newsletter coming soon!</p>'
+
 # Social media links - set to None to hide the link
 SOCIAL_INSTAGRAM = None  # e.g., 'https://instagram.com/yourhandle'
 SOCIAL_YOUTUBE = None    # e.g., 'https://youtube.com/@yourchannel'
diff --git a/templates/base.html b/templates/base.html
index b9cd1a5..8c9a689 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -146,12 +146,7 @@
                 {% if newsletter_enabled %}
                 <div class="footer-section">
                     <h3>Newsletter</h3>
-                    <!-- Replace with your newsletter service form -->
-                    <!-- <form class="newsletter-form" action="#" method="post">
-                        <input type="email" name="email" placeholder="Enter your email" required>
-                        <button type="submit">Subscribe</button>
-                    </form> -->
-                    <p class="newsletter-placeholder">Newsletter coming soon!</p>
+                    {{ newsletter_html | safe }}
                 </div>
                 {% endif %}