diff --git a/src/blackmisc/network/textmessagelist.cpp b/src/blackmisc/network/textmessagelist.cpp
index 115b14eab..a0ac36497 100644
--- a/src/blackmisc/network/textmessagelist.cpp
+++ b/src/blackmisc/network/textmessagelist.cpp
@@ -150,6 +150,14 @@ namespace BlackMisc
             std::for_each(this->begin(), this->end(), [](CTextMessage & tm) { tm.markAsSent(); });
         }
 
+        CTextMessageList CTextMessageList::markedAsSent()
+        {
+            if (this->isEmpty()) { return {}; }
+            CTextMessageList copy = *this;
+            copy.markAsSent();
+            return copy;
+        }
+
         void CTextMessageList::addConsolidatedTextMessage(const CTextMessage &message)
         {
             if (message.isEmpty()) { return; }
diff --git a/src/blackmisc/network/textmessagelist.h b/src/blackmisc/network/textmessagelist.h
index 194be5e85..fd3ec02f2 100644
--- a/src/blackmisc/network/textmessagelist.h
+++ b/src/blackmisc/network/textmessagelist.h
@@ -100,6 +100,9 @@ namespace BlackMisc
             //! Mark all messages as sent
             void markAsSent();
 
+            //! Marked as sent
+            CTextMessageList markedAsSent();
+
             //! Add a text message, but append it to an existing message if possible
             void addConsolidatedTextMessage(const CTextMessage &message);
         };