diff --git a/doc/hs-office-mailinglist-subscriptions.md b/doc/hs-office-mailinglist-subscriptions.md
deleted file mode 100644
index d33d4f33..00000000
--- a/doc/hs-office-mailinglist-subscriptions.md
+++ /dev/null
@@ -1,14 +0,0 @@
-# Sketch UI for mailinglist subscriptions 
-
-```PlantUML
-@startsalt
-{{^==Mailinglist-Subscriptions
-Members-Announce:      | [<color:#9a9a9a>X</color>] | ^frank.meiler@example.org^ | [Create New]
-Members-Discussion:    | [X]                        | ^frank.meiler@example.org^ | [Create New]
-Customers-Announce:    | [<color:#9a9a9a>X</color>] | ^frank.meiler@example.org^ | [Create New]
-Operations-Announce:   | [<color:#9a9a9a>X</color>] | ^Default Contact Data^ | [Create New]
-Operations-Discussion: | [ ]                        | ^                    ^ | [Create New]
-  
-}}
-@endsalt
-```