diff --git a/app/src/main/java/eu/faircode/email/AdapterMessage.java b/app/src/main/java/eu/faircode/email/AdapterMessage.java
index 2efc340890..b4f411ce2e 100644
--- a/app/src/main/java/eu/faircode/email/AdapterMessage.java
+++ b/app/src/main/java/eu/faircode/email/AdapterMessage.java
@@ -391,6 +391,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         private TextView tvStoredTitle;
         private TextView tvSizeExTitle;
         private TextView tvLanguageTitle;
+        private TextView tvThreadTitle;
 
         private TextView tvSubmitter;
         private TextView tvDeliveredTo;
@@ -405,6 +406,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
         private TextView tvStored;
         private TextView tvSizeEx;
         private TextView tvLanguage;
+        private TextView tvThread;
 
         private TextView tvSubjectEx;
         private TextView tvFlags;
@@ -761,6 +763,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvStoredTitle = vsBody.findViewById(R.id.tvStoredTitle);
             tvSizeExTitle = vsBody.findViewById(R.id.tvSizeExTitle);
             tvLanguageTitle = vsBody.findViewById(R.id.tvLanguageTitle);
+            tvThreadTitle = vsBody.findViewById(R.id.tvThreadTitle);
 
             tvSubmitter = vsBody.findViewById(R.id.tvSubmitter);
             tvDeliveredTo = vsBody.findViewById(R.id.tvDeliveredTo);
@@ -775,6 +778,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvStored = vsBody.findViewById(R.id.tvStored);
             tvSizeEx = vsBody.findViewById(R.id.tvSizeEx);
             tvLanguage = vsBody.findViewById(R.id.tvLanguage);
+            tvThread = vsBody.findViewById(R.id.tvThread);
 
             tvSubjectEx = vsBody.findViewById(R.id.tvSubjectEx);
             tvFlags = vsBody.findViewById(R.id.tvFlags);
@@ -1557,6 +1561,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvStoredTitle.setVisibility(View.GONE);
             tvSizeExTitle.setVisibility(View.GONE);
             tvLanguageTitle.setVisibility(View.GONE);
+            tvThreadTitle.setVisibility(View.GONE);
 
             tvSubmitter.setVisibility(View.GONE);
             tvDeliveredTo.setVisibility(View.GONE);
@@ -1571,6 +1576,7 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvStored.setVisibility(View.GONE);
             tvSizeEx.setVisibility(View.GONE);
             tvLanguage.setVisibility(View.GONE);
+            tvThread.setVisibility(View.GONE);
 
             tvSubjectEx.setVisibility(View.GONE);
             tvFlags.setVisibility(View.GONE);
@@ -2253,6 +2259,11 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
             tvLanguage.setVisibility(showLanguage ? View.VISIBLE : View.GONE);
             tvLanguage.setText(message.language == null ? null : new Locale(message.language).getDisplayLanguage());
 
+            boolean show_thread = (show_addresses && (BuildConfig.DEBUG || debug));
+            tvThreadTitle.setVisibility(show_thread ? View.VISIBLE : View.GONE);
+            tvThread.setVisibility(show_thread ? View.VISIBLE : View.GONE);
+            tvThread.setText(message.thread);
+
             tvSubjectEx.setVisibility(show_addresses ? View.VISIBLE : View.GONE);
             tvSubjectEx.setText(message.subject);
             if (subject_italic)
diff --git a/app/src/main/res/layout/include_message_addresses.xml b/app/src/main/res/layout/include_message_addresses.xml
index cc31acb3d1..8565001668 100644
--- a/app/src/main/res/layout/include_message_addresses.xml
+++ b/app/src/main/res/layout/include_message_addresses.xml
@@ -447,6 +447,31 @@
         app:layout_constraintStart_toEndOf="@+id/barrier_addresses"
         app:layout_constraintTop_toBottomOf="@id/tvSizeEx" />
 
+    <eu.faircode.email.FixedTextView
+        android:id="@+id/tvThreadTitle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="6dp"
+        android:labelFor="@+id/tvThread"
+        android:text="@string/title_thread"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
+        android:textStyle="bold"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@id/tvLanguage" />
+
+    <eu.faircode.email.FixedTextView
+        android:id="@+id/tvThread"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="6dp"
+        android:layout_marginEnd="6dp"
+        android:text="123"
+        android:textAppearance="@style/TextAppearance.AppCompat.Small"
+        android:textIsSelectable="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/barrier_addresses"
+        app:layout_constraintTop_toBottomOf="@id/tvLanguage" />
+
     <androidx.constraintlayout.widget.Barrier
         android:id="@+id/barrier_addresses"
         android:layout_width="wrap_content"
@@ -458,7 +483,7 @@
             tvCcTitle,tvBccTitle,
             tvIdentityTitle,
             tvSentTitle,tvReceivedTitle,tvStoredTitle,
-            tvSizeExTitle, tvLanguageTitle" />
+            tvSizeExTitle,tvLanguageTitle,tvThreadTitle" />
 
     <eu.faircode.email.FixedTextView
         android:id="@+id/tvSubjectEx"
@@ -471,7 +496,7 @@
         android:textIsSelectable="true"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/tvLanguage" />
+        app:layout_constraintTop_toBottomOf="@id/tvThread" />
 
     <eu.faircode.email.FixedTextView
         android:id="@+id/tvFlags"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 20ae33cbb3..3aafeadd5b 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1247,6 +1247,7 @@
     <string name="title_stored">Stored:</string>
     <string name="title_size">Size:</string>
     <string name="title_language">Language:</string>
+    <string name="title_thread" translatable="false">Thread:</string>
     <string name="title_subject">Subject:</string>
     <string name="title_attachment">Attachment:</string>
     <string name="title_body_hint">Your message</string>