diff --git a/app/src/main/java/eu/faircode/email/AdapterIdentity.java b/app/src/main/java/eu/faircode/email/AdapterIdentity.java
index dbc6a7160f..62e7d49832 100644
--- a/app/src/main/java/eu/faircode/email/AdapterIdentity.java
+++ b/app/src/main/java/eu/faircode/email/AdapterIdentity.java
@@ -71,6 +71,7 @@ public class AdapterIdentity extends RecyclerView.Adapter<AdapterIdentity.ViewHo
         private TextView tvHost;
         private ImageView ivState;
         private TextView tvAccount;
+        private TextView tvSignKeyId;
         private TextView tvLast;
         private TextView tvError;
 
@@ -88,6 +89,7 @@ public class AdapterIdentity extends RecyclerView.Adapter<AdapterIdentity.ViewHo
             tvHost = itemView.findViewById(R.id.tvHost);
             ivState = itemView.findViewById(R.id.ivState);
             tvAccount = itemView.findViewById(R.id.tvAccount);
+            tvSignKeyId = itemView.findViewById(R.id.tvSignKeyId);
             tvLast = itemView.findViewById(R.id.tvLast);
             tvError = itemView.findViewById(R.id.tvError);
         }
@@ -123,6 +125,9 @@ public class AdapterIdentity extends RecyclerView.Adapter<AdapterIdentity.ViewHo
 
             tvHost.setText(String.format("%s:%d", identity.host, identity.port));
             tvAccount.setText(identity.accountName);
+            tvSignKeyId.setText(identity.sign_key == null ? null
+                    : context.getString(R.string.title_sign_key, Long.toHexString(identity.sign_key)));
+            tvSignKeyId.setVisibility(identity.sign_key == null ? View.GONE : View.VISIBLE);
             tvLast.setText(context.getString(R.string.title_last_connected,
                     identity.last_connected == null ? "-" : DTF.format(identity.last_connected)));
 
diff --git a/app/src/main/res/layout/item_identity.xml b/app/src/main/res/layout/item_identity.xml
index 1840ab62da..ceca932adb 100644
--- a/app/src/main/res/layout/item_identity.xml
+++ b/app/src/main/res/layout/item_identity.xml
@@ -123,6 +123,20 @@
                 app:layout_constraintStart_toEndOf="@id/tvHost"
                 app:layout_constraintTop_toTopOf="@id/tvHost" />
 
+            <TextView
+                android:id="@+id/tvSignKeyId"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginStart="6dp"
+                android:layout_marginEnd="6dp"
+                android:ellipsize="start"
+                android:singleLine="true"
+                android:text="@string/title_sign_key"
+                android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toEndOf="@+id/ivState"
+                app:layout_constraintTop_toBottomOf="@id/tvHost" />
+
             <TextView
                 android:id="@+id/tvLast"
                 android:layout_width="0dp"
@@ -135,7 +149,7 @@
                 android:textAppearance="@style/TextAppearance.AppCompat.Small"
                 app:layout_constraintEnd_toEndOf="parent"
                 app:layout_constraintStart_toEndOf="@+id/ivState"
-                app:layout_constraintTop_toBottomOf="@id/tvHost" />
+                app:layout_constraintTop_toBottomOf="@id/tvSignKeyId" />
 
             <TextView
                 android:id="@+id/tvError"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 4c00173812..1b80ab9259 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -458,6 +458,7 @@
     <string name="title_account_delete">Delete this account permanently?</string>
     <string name="title_identity_delete">Delete this identity permanently?</string>
     <string name="title_edit_html">Edit as HTML</string>
+    <string name="title_sign_key">Sign key: %1$s</string>
     <string name="title_last_connected">Last connected: %1$s</string>
     <string name="title_pop_support">The POP3 protocol supports downloading and deleting messages from the inbox only. POP3 cannot mark messages as read, move messages, etc. POP3 will use more battery power and data than IMAP. So, consider using the IMAP protocol whenever possible.</string>
     <string name="title_activesync_support">ActiveSync is not supported</string>