diff --git a/src/com/hectorone/multismssender/MultiSmsSender.java b/src/com/hectorone/multismssender/MultiSmsSender.java
index 4226a88..f712bcc 100644
--- a/src/com/hectorone/multismssender/MultiSmsSender.java
+++ b/src/com/hectorone/multismssender/MultiSmsSender.java
@@ -13,8 +13,10 @@ import android.app.PendingIntent;
 import android.app.ProgressDialog;
 import android.content.ContentResolver;
 import android.content.ContentValues;
+import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
@@ -30,6 +32,8 @@ import android.view.View.OnClickListener;
 import android.view.inputmethod.EditorInfo;
 import android.widget.Button;
 import android.widget.CheckBox;
+import android.widget.CompoundButton;
+import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.TextView;
 
 public class MultiSmsSender extends Activity {
@@ -59,8 +63,11 @@ public class MultiSmsSender extends Activity {
 	private static final int SENDING_DIALOG_KEY     = 6;
 
 	public static final String PARAM_NUMBERS_LIST = "param number list";
-	public static final String PARAM_FLUSH = "param flush";
-	public static final String PARAM_ENTRY_ID = "entry_id";
+	public static final String PARAM_FLUSH        = "param flush";
+	public static final String PARAM_ENTRY_ID     = "entry_id";
+	
+	public static final String PREF_NAME          = "com.hectorone.multismssender.pref";
+	public static final String PREF_USE_DELIVERY  = "use_delivery";
 
 	public static final String DEBUG_TAG="MultiSmsSender";
 
@@ -220,6 +227,24 @@ public class MultiSmsSender extends Activity {
 				mThreadSender.start();
 			}
 		});
+		
+		//delivery preference
+		SharedPreferences settings = getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
+		boolean deliveryEnabled    = settings.getBoolean(PREF_USE_DELIVERY, false);
+		
+		mDeliveryCheckBox.setChecked(deliveryEnabled);
+		mDeliveryCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
+			
+			@Override
+			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
+				SharedPreferences settings = getSharedPreferences(PREF_NAME, Context.MODE_PRIVATE);
+				settings.edit().putBoolean(PREF_USE_DELIVERY, isChecked);
+				//TODO prefer apply() to commit() since API 9
+				settings.edit().commit();
+				
+			}
+		});
+		
 	}
 
 	public void selectNumbers() {