diff --git a/_toc.yml b/_toc.yml
index 955eeddb..e0d2e9f5 100644
--- a/_toc.yml
+++ b/_toc.yml
@@ -9,7 +9,9 @@ parts:
   chapters:
     - file: user-guide/index
       sections: 
+        - file: user-guide/login_servers
         - file: user-guide/evolution_for_o365
+        - file: user-guide/thunderbird_for_o365
         - file: user-guide/firefox_profile_per_host 
 
 - caption: Admin Guide
diff --git a/user-guide/index.md b/user-guide/index.md
index 82f0d4c0..3db68eaa 100644
--- a/user-guide/index.md
+++ b/user-guide/index.md
@@ -15,4 +15,5 @@ This guide contains tricks and recipies for end users using Red Hat Enterprise L
 
 - [Login Servers](login_servers)
 - [Connect Evolution with Office365](evolution_for_o365)
+- [Connect Thunderbird with Office365](thunderbird_for_o365)
 - Firefox refuses to start with home directory on the network drive -> [Per Host Default Profile for Firefox](firefox_profile_per_host)