diff --git a/server/notification-providers/promosms.js b/server/notification-providers/promosms.js
index 4f7e8f90..572a2132 100644
--- a/server/notification-providers/promosms.js
+++ b/server/notification-providers/promosms.js
@@ -8,6 +8,14 @@ class PromoSMS extends NotificationProvider {
     async send(notification, msg, monitorJSON = null, heartbeatJSON = null) {
         let okMsg = "Sent Successfully.";
 
+        if (notification.promosmsAllowLongSMS === undefined) {
+            notification.promosmsAllowLongSMS = false;
+        }
+
+        //TODO: Add option for enabling special characters. It will decrese message max length from 160 to 70 chars.
+        //Lets remove non ascii char
+        let cleanMsg = msg.replace(/[^\x00-\x7F]/g, "");
+
         try {
             let config = {
                 headers: {
@@ -18,8 +26,9 @@ class PromoSMS extends NotificationProvider {
             };
             let data = {
                 "recipients": [ notification.promosmsPhoneNumber ],
-                //Lets remove non ascii char
-                "text": msg.replace(/[^\x00-\x7F]/g, ""),
+                //Trim message to maximum length of 1 SMS or 4 if we allowed long messages
+                "text": notification.promosmsAllowLongSMS ? cleanMsg.substring(0, 639) : cleanMsg.substring(0, 159),
+                "long-sms": notification.promosmsAllowLongSMS,
                 "type": Number(notification.promosmsSMSType),
                 "sender": notification.promosmsSenderName
             };
diff --git a/src/components/notifications/PromoSMS.vue b/src/components/notifications/PromoSMS.vue
index 03c02222..15ed241b 100644
--- a/src/components/notifications/PromoSMS.vue
+++ b/src/components/notifications/PromoSMS.vue
@@ -26,6 +26,10 @@
         <label for="promosms-sender-name" class="form-label">{{ $t("promosmsSMSSender") }}</label>
         <input id="promosms-sender-name" v-model="$parent.notification.promosmsSenderName" type="text" minlength="3" maxlength="11" class="form-control">
     </div>
+    <div class="form-check form-switch">
+        <input id="promosms-allow-long" v-model="$parent.notification.promosmsAllowLongSMS" type="checkbox" class="form-check-input">
+        <label for="promosms-allow-long" class="form-label">{{ $t("promosmsAllowLongSMS") }}</label>
+    </div>
 </template>
 
 <script>
diff --git a/src/languages/en.js b/src/languages/en.js
index 7a48d0d0..9c19c2da 100644
--- a/src/languages/en.js
+++ b/src/languages/en.js
@@ -320,6 +320,7 @@ export default {
     promosmsTypeSpeed: "SMS SPEED - Highest priority in system. Very quick and reliable but costly (about twice of SMS FULL price).",
     promosmsPhoneNumber: "Phone number (for Polish recipient You can skip area codes)",
     promosmsSMSSender: "SMS Sender Name : Pre-registred name or one of defaults: InfoSMS, SMS Info, MaxSMS, INFO, SMS",
+    promosmsAllowLongSMS: "Allow long SMS",
     "Feishu WebHookUrl": "Feishu WebHookURL",
     matrixHomeserverURL: "Homeserver URL (with http(s):// and optionally port)",
     "Internal Room Id": "Internal Room ID",
diff --git a/src/languages/pl.js b/src/languages/pl.js
index 04a74997..beef5df5 100644
--- a/src/languages/pl.js
+++ b/src/languages/pl.js
@@ -284,6 +284,7 @@ export default {
     promosmsTypeSpeed: "SMS SPEED - wysyłka priorytetowa, ma wszystkie zalety SMS FULL",
     promosmsPhoneNumber: "Numer odbiorcy",
     promosmsSMSSender: "Nadawca SMS (wcześniej zatwierdzone nazwy z panelu PromoSMS)",
+    promosmsAllowLongSMS: "Zezwól na długie SMSy",
     "Primary Base URL": "Główny URL",
     "Push URL": "Push URL",
     needPushEvery: "Powinieneś wywoływać ten URL co {0} sekund",