diff --git a/app/src/main/java/eu/faircode/email/ViewModelMessages.java b/app/src/main/java/eu/faircode/email/ViewModelMessages.java
index 621266de53..fcec46db3e 100644
--- a/app/src/main/java/eu/faircode/email/ViewModelMessages.java
+++ b/app/src/main/java/eu/faircode/email/ViewModelMessages.java
@@ -68,7 +68,8 @@ public class ViewModelMessages extends ViewModel {
         }
     };
 
-    private ExecutorService executor = Helper.getBackgroundExecutor(2, "model");
+    // AndroidX IO = 4 threads
+    private ExecutorService executor = Helper.getBackgroundExecutor(4, "model");
 
     private static final int LOCAL_PAGE_SIZE = 50;
     private static final int REMOTE_PAGE_SIZE = 10;