diff --git a/source/conf.py b/source/conf.py
index 45812f7..a31eb35 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -135,7 +135,8 @@ html_theme_options = {
         ('solid', 'podcast', 'podcasts', 'https://kreskenn.nerv-project.eu', False),
         ('solid', 'paragraph', 'gemini', 'gemini://nerv-project.eu', False),
         ('solid', 'rss', 'rss', 'https://nerv-project.eu/blog/atom.xml', False),
-        ('solid', 'rss', 'newsletter (rss)', 'https://morpork.nerv-project.eu/blog/atom.xml', False)
+        ('solid', 'rss', 'newsletter (rss)', 'https://morpork.nerv-project.eu/blog/atom.xml', False),
+        ('solid', 'envelope', 'newsletter', 'https://sybil.nerv-project.eu/mailman3/lists/newsletter.sybil.nerv-project.eu/', False),
     ],
     'external_languages': [
         # ('code', 'name', 'baseurl'),