diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
index b6c5e63f..7f44dfdd 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/activities/ThreadActivity.kt
@@ -10,6 +10,7 @@ import com.simplemobiletools.smsmessenger.R
 import com.simplemobiletools.smsmessenger.adapters.ThreadAdapter
 import com.simplemobiletools.smsmessenger.extensions.config
 import com.simplemobiletools.smsmessenger.extensions.getMessages
+import com.simplemobiletools.smsmessenger.extensions.markSMSRead
 import com.simplemobiletools.smsmessenger.helpers.THREAD_ID
 import com.simplemobiletools.smsmessenger.helpers.THREAD_NAME
 import com.simplemobiletools.smsmessenger.helpers.THREAD_NUMBER
@@ -73,6 +74,10 @@ class ThreadActivity : SimpleActivity() {
             if (it.type == Telephony.Sms.MESSAGE_TYPE_FAILED) {
                 items.add(ThreadError(it.id))
             }
+
+            if (!it.read) {
+                markSMSRead(it.id)
+            }
         }
 
         return items
diff --git a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt
index e5108325..130eb9fa 100644
--- a/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/smsmessenger/extensions/Context.kt
@@ -167,7 +167,19 @@ fun Context.insertNewSMS(address: String, subject: String, body: String, date: L
         put(Telephony.Sms.SUBJECT, subject)
         put(Telephony.Sms.BODY, body)
         put(Telephony.Sms.DATE, date)
+        put(Telephony.Sms.READ, 0)
+        put(Telephony.Sms.TYPE, Telephony.Sms.MESSAGE_TYPE_INBOX)
     }
 
     contentResolver.insert(uri, contentValues)
 }
+
+fun Context.markSMSRead(id: Int) {
+    val uri = Telephony.Sms.CONTENT_URI
+    val contentValues = ContentValues().apply {
+        put(Telephony.Sms.READ, 1)
+    }
+    val selection = "${Telephony.Sms._ID} = ? AND ${Telephony.Sms.READ} = ?"
+    val selectionArgs = arrayOf(id.toString(), "0")
+    contentResolver.update(uri, contentValues, selection, selectionArgs)
+}