diff --git a/README.md b/README.md
index f617e3c7..a69d33da 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,7 @@ If the app rejects calls from contacts on Android 10, allow _Contacts_ permissio
 * CALL_SCREENING - block or allow call
 * READ_CALL_LOG - check you have called/answered the number and count times the number have called you in X minutes
 * READ_SMS - check you have sent a message to the number and you received a message from the number
+* SEND_SMS - send a message to the number if the call is rejected
 * NOTIFICATION_LISTENER - find mobile numbers in messages
 * READ_PHONE_STATE - check on which SIM the number is calling
 * RECEIVE_BOOT_COMPLETED - persist clean expired numbers job across reboots
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index c8d94e7f..e784c36a 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -83,4 +83,10 @@ dependencies {
     ksp(libs.androidx.room.compiler)
     implementation(libs.google.libphonenumber)
     implementation(libs.guardianproject.panic)
+    implementation("androidx.compose.ui:ui:1.4.0")
+    implementation("androidx.compose.material3:material3:1.0.0-alpha13")
+    implementation("androidx.compose.ui:ui-tooling-preview:1.4.0")
+    implementation("androidx.compose.runtime:runtime-livedata:1.4.0")
+    implementation("androidx.activity:activity-compose:1.4.0")
+    implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.4.0")
 }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e306151f..7416f128 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -6,6 +6,7 @@
     <uses-permission android:name="android.permission.READ_CALL_LOG" />
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.READ_SMS" />
+    <uses-permission android:name="android.permission.SEND_SMS" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.READ_CONTACTS" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
@@ -110,5 +111,7 @@
             </meta-data>
         </service>
 
+
+
     </application>
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/me/lucky/silence/MainActivity.kt b/app/src/main/java/me/lucky/silence/MainActivity.kt
index f53eab68..6d0919ce 100644
--- a/app/src/main/java/me/lucky/silence/MainActivity.kt
+++ b/app/src/main/java/me/lucky/silence/MainActivity.kt
@@ -1,5 +1,8 @@
 package me.lucky.silence
 
+import android.Manifest
+import android.app.AlertDialog
+import android.content.pm.PackageManager
 import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
@@ -10,13 +13,26 @@ import androidx.compose.material3.darkColorScheme
 import androidx.compose.material3.dynamicDarkColorScheme
 import androidx.compose.material3.dynamicLightColorScheme
 import androidx.compose.material3.lightColorScheme
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 import androidx.navigation.compose.rememberNavController
 import me.lucky.silence.ui.App
 
+// Define a constant to identify the SEND_SMS permission request
+private const val MY_PERMISSIONS_REQUEST_SEND_SMS = 0
+
 open class MainActivity : ComponentActivity() {
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         NotificationManager(this).createNotificationChannels()
+
+        // Check and request SMS permission
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
+            // If not, request the permission
+            ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.SEND_SMS), MY_PERMISSIONS_REQUEST_SEND_SMS)
+        }
+
         setContent {
             val isAndroid12OrLater = Build.VERSION.SDK_INT >= Build.VERSION_CODES.S
             val colorScheme = when {
@@ -30,4 +46,30 @@ open class MainActivity : ComponentActivity() {
             }
         }
     }
-}
+
+    // This method is called when the user responds to the permission request
+    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<String>, grantResults: IntArray) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
+        when (requestCode) {
+            // If the result is for the SEND_SMS permission request
+            MY_PERMISSIONS_REQUEST_SEND_SMS -> {
+                // If the permission is granted
+                if ((grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED)) {
+                    // Show a dialog to check Settings
+                    AlertDialog.Builder(this)
+                        .setTitle("Check Settings")
+                        .setMessage("You can set up an SMS notification in settings to be sent to a blocked number when it's blocked by the app.")
+                        .setPositiveButton("OK") { dialog, _ ->
+                            // Dismiss the dialog when the OK button is clicked
+                            dialog.dismiss()
+                        }
+                        .show()
+                }
+                return
+            }
+            else -> {
+                // Ignore all other requests.
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/me/lucky/silence/NotificationManager.kt b/app/src/main/java/me/lucky/silence/NotificationManager.kt
index 58076876..25ed588a 100644
--- a/app/src/main/java/me/lucky/silence/NotificationManager.kt
+++ b/app/src/main/java/me/lucky/silence/NotificationManager.kt
@@ -6,6 +6,8 @@ import androidx.core.app.NotificationChannelCompat
 import androidx.core.app.NotificationCompat
 import androidx.core.app.NotificationManagerCompat
 import androidx.core.app.Person
+import android.telephony.SmsManager
+
 
 class NotificationManager(private val ctx: Context) {
     companion object {
@@ -43,4 +45,27 @@ class NotificationManager(private val ctx: Context) {
             )
         } catch (_: SecurityException) {}
     }
-}
\ No newline at end of file
+
+
+// Function to send an SMS message
+    fun sendSMS(phoneNumber: String, message: String) {
+    // Get the default instance of the SmsManager
+    val smsManager = SmsManager.getDefault()
+    // Send a text message to the provided phone number
+        smsManager.sendTextMessage(phoneNumber, null, message, null, null)
+    }
+
+// Function to send an SMS to a blocked call
+fun smsBlockedCall(tel: String, sim: Sim?) {
+    // Get the SMS message from Preferences
+    val prefs = Preferences(ctx)
+    val message = prefs.smsMessage
+
+    // If the message is not empty, send an SMS to the blocked number
+    if (!message.isNullOrEmpty()) {
+        sendSMS(tel, message)
+    }
+
+
+
+}}
\ No newline at end of file
diff --git a/app/src/main/java/me/lucky/silence/Preferences.kt b/app/src/main/java/me/lucky/silence/Preferences.kt
index 893b6abc..b5f8eff9 100644
--- a/app/src/main/java/me/lucky/silence/Preferences.kt
+++ b/app/src/main/java/me/lucky/silence/Preferences.kt
@@ -20,6 +20,7 @@ class Preferences(ctx: Context) {
         const val REPEATED_BURST_TIMEOUT = "repeated_burst_timeout"
         const val MESSAGES = "messages"
         const val MESSAGES_TEXT_TTL = "messages_text_ttl"
+        const val SMS_MESSAGE = "sms_message"
 
         const val RESPONSE_OPTIONS = "call_screening_response_options"
         const val UNKNOWN_NUMBERS_CHECKED = "unknown_numbers_checked"
@@ -131,6 +132,10 @@ class Preferences(ctx: Context) {
     var regexPattern: String?
         get() = prefs.getString(REGEX_PATTERN, "")
         set(value) = prefs.edit { putString(REGEX_PATTERN, value) }
+
+    var smsMessage: String?
+        get() = prefs.getString(SMS_MESSAGE, "")
+        set(value) = prefs.edit { putString(SMS_MESSAGE, value) }
 }
 
 enum class Contact(val value: Int) {
diff --git a/app/src/main/java/me/lucky/silence/screening/CallScreeningService.kt b/app/src/main/java/me/lucky/silence/screening/CallScreeningService.kt
index bd2e2d2a..b4cc8bb5 100644
--- a/app/src/main/java/me/lucky/silence/screening/CallScreeningService.kt
+++ b/app/src/main/java/me/lucky/silence/screening/CallScreeningService.kt
@@ -113,6 +113,9 @@ class CallScreeningService : CallScreeningService() {
                 }
             }
             notificationManager.notifyBlockedCall(tel ?: return, sim)
+
+            // Here's where you would call smsBlockedCall
+            notificationManager.smsBlockedCall(tel ?: return, sim)
         }
         respondToCall(callDetails, response)
     }
diff --git a/app/src/main/java/me/lucky/silence/ui/MainScreen.kt b/app/src/main/java/me/lucky/silence/ui/MainScreen.kt
index 2d50539a..d34aba17 100644
--- a/app/src/main/java/me/lucky/silence/ui/MainScreen.kt
+++ b/app/src/main/java/me/lucky/silence/ui/MainScreen.kt
@@ -10,13 +10,19 @@ import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.painterResource
@@ -37,6 +43,7 @@ import me.lucky.silence.ui.common.ToggleableButton
 
 @Composable
 fun ModuleList(modules: List<Module>) {
+
     LazyColumn {
         items(modules) { module ->
             if ((module.getPreference != null) && (module.setPreference != null) && (module.navigation != null)) {
@@ -83,6 +90,7 @@ fun MainScreen(
     onNavigateToSettings: () -> Unit,
     onNavigateToRegex: () -> Unit,
 ) {
+
     fun getContactedPermissions(): Array<String> {
         val contacted = prefs.contacted
         val permissions = mutableSetOf<String>()
@@ -196,6 +204,9 @@ fun MainScreen(
             setPreference = { prefs.isBlockEnabled = it },
         ),
     )
+
+
+
     Scaffold(topBar = {
         TopAppBar(title = { Text(text = stringResource(R.string.app_name)) }, actions = {
             IconButton(onClick = onNavigateToSettings) {
@@ -221,6 +232,8 @@ fun MainScreen(
             )
         }
     })
+
+
 }
 
 @Preview
diff --git a/app/src/main/java/me/lucky/silence/ui/SettingsScreen.kt b/app/src/main/java/me/lucky/silence/ui/SettingsScreen.kt
index 8f5fceab..018343be 100644
--- a/app/src/main/java/me/lucky/silence/ui/SettingsScreen.kt
+++ b/app/src/main/java/me/lucky/silence/ui/SettingsScreen.kt
@@ -1,9 +1,20 @@
 package me.lucky.silence.ui
 
+import android.app.AlertDialog
 import android.content.Context
+import androidx.compose.foundation.layout.Column
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TextField
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import me.lucky.silence.ControlReceiver
 import me.lucky.silence.Preferences
@@ -17,6 +28,7 @@ import me.lucky.silence.ui.common.Screen
 
 @Composable
 fun SettingsScreen(ctx: Context, prefs: Preferences, onBackPressed: () -> Boolean) {
+    var showSmsDialog by remember { mutableStateOf(false) }
     val preferenceList = listOf(
         Preference(
             getValue = { Utils.isComponentEnabled(ctx, ControlReceiver::class.java) },
@@ -73,17 +85,75 @@ fun SettingsScreen(ctx: Context, prefs: Preferences, onBackPressed: () -> Boolea
             },
             name = R.string.settings_skip_notification,
             description = R.string.settings_skip_notification_description,
+        ),
+        Preference(
+            getValue = { prefs.smsMessage!!.isNotEmpty() },
+            setValue = { isChecked ->
+                if (isChecked) {
+                    showSmsDialog = true
+                } else {
+                    prefs.smsMessage = ""
+                }
+            },
+            name = R.string.enter_sms_message,
+            description = R.string.enter_sms_message_description,
         )
     )
+
     Screen(title = R.string.settings,
         onBackPressed = onBackPressed,
         content = { PreferenceList(preferenceList) })
+    if (showSmsDialog) {
+        SmsMessageDialog(
+            onDismiss = { showSmsDialog = false },
+            onConfirm = { message ->
+                prefs.smsMessage = message
+                showSmsDialog = false
+            }
+        )
+    }
 }
 
+
 @Preview
 @Composable
 fun SettingsScreenPreview() {
     MaterialTheme {
         SettingsScreen(LocalContext.current, Preferences(LocalContext.current)) { true }
     }
-}
\ No newline at end of file
+
+}
+
+@Composable
+fun SmsMessageDialog(onDismiss: () -> Unit, onConfirm: (String) -> Unit) {
+    val context = LocalContext.current
+    val input = remember { mutableStateOf("") }
+
+    AlertDialog(
+        onDismissRequest = { onDismiss() },
+        title = {
+            Text(text = stringResource(id = R.string.enter_sms_message))
+        },
+        text = {
+            Column {
+                Text(text = stringResource(id = R.string.enter_sms_message_description))
+                TextField(
+                    value = input.value,
+                    onValueChange = { input.value = it }
+                )
+            }
+        },
+        confirmButton = {
+            TextButton(onClick = {
+                onConfirm(input.value)
+            }) {
+                Text(text = stringResource(id = android.R.string.ok))
+            }
+        },
+        dismissButton = {
+            TextButton(onClick = { onDismiss() }) {
+                Text(text = stringResource(id = android.R.string.cancel))
+            }
+        }
+    )
+}
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 9c01b3af..58e74c6f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -86,4 +86,6 @@
     <string name="back">Back</string>
     <string name="toggle_off">Off</string>
     <string name="toggle_on">On</string>
+    <string name="enter_sms_message">SMS Message</string>
+    <string name="enter_sms_message_description">Enter the message to send when a call is blocked. Leave empty to not send an SMS.</string>
 </resources>
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index a4d74b0c..76e58826 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-agp = "8.3.2"
+agp = "8.4.1"
 kotlin = "1.9.23"
 coreKtx = "1.12.0"
 junit = "4.13.2"
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 645616a1..b5460a39 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Tue Jun 14 21:51:27 MSK 2022
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME