Ensure outbox

app/src/main/java/eu/faircode/email/EntityFolder.java

@@ -221,6 +221,16 @@ public class EntityFolder extends EntityOrder implements Serializable {
         }
     }
 
+    static EntityFolder getOutbox() {
+        EntityFolder outbox = new EntityFolder();
+        outbox.name = "OUTBOX";
+        outbox.type = EntityFolder.OUTBOX;
+        outbox.synchronize = false;
+        outbox.sync_days = 0;
+        outbox.keep_days = 0;
+        return outbox;
+    }
+
     static String getNotificationChannelId(long id) {
         return "notification.folder." + id;
     }

app/src/main/java/eu/faircode/email/FragmentCompose.java

@@ -3905,8 +3905,11 @@ public class FragmentCompose extends FragmentBase {
                         EntityOperation.queue(context, draft, EntityOperation.DELETE);
 
                         EntityFolder outbox = db.folder().getOutbox();
-                        if (outbox == null)
+                        if (outbox == null) {
-                            throw new IllegalArgumentException("Outbox missing");
+                            Log.e("Outbox missing");
+                            outbox = EntityFolder.getOutbox();
+                            outbox.id = db.folder().insertFolder(outbox);
+                        }
 
                         // Copy message to outbox
                         draft.id = null;

app/src/main/java/eu/faircode/email/FragmentSetup.java

@@ -320,12 +320,7 @@ public class FragmentSetup extends FragmentBase {
 
                     EntityFolder outbox = db.folder().getOutbox();
                     if (outbox == null) {
-                        outbox = new EntityFolder();
+                        outbox = EntityFolder.getOutbox();
-                        outbox.name = "OUTBOX";
-                        outbox.type = EntityFolder.OUTBOX;
-                        outbox.synchronize = false;
-                        outbox.sync_days = 0;
-                        outbox.keep_days = 0;
                         outbox.id = db.folder().insertFolder(outbox);
                     }