Added document icon

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

@@ -115,7 +115,7 @@ public class AdapterAttachment extends RecyclerView.Adapter<AdapterAttachment.Vi
             String extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(attachment.getMimeType());
             if (extension != null)
                 resid = context.getResources().getIdentifier("file_" + extension, "drawable", context.getPackageName());
-            ivType.setImageResource(resid == 0 ? R.drawable.baseline_attachment_24 : resid);
+            ivType.setImageResource(resid == 0 ? R.drawable.baseline_description_24 : resid);
 
             tvName.setText(attachment.name);
 

app/src/main/res/drawable/baseline_description_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="?attr/colorControlNormal">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M14,2L6,2c-1.1,0 -1.99,0.9 -1.99,2L4,20c0,1.1 0.89,2 1.99,2L18,22c1.1,0 2,-0.9 2,-2L20,8l-6,-6zM16,18L8,18v-2h8v2zM16,14L8,14v-2h8v2zM13,9L13,3.5L18.5,9L13,9z"/>
+</vector>