---
title: "Serbia SMS Guideline"
slug: "serbia-sms-guideline"
description: "Covers Serbia SMS requirements for Insider One, including sender registration, consent requirements, compliance rules, and setup steps."
updated: 2026-06-12T16:49:42Z
published: 2026-06-12T16:49:42Z
canonical: "academy.insiderone.com/serbia-sms-guideline"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://academy.insiderone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Serbia SMS Guideline

You can refer to the SMS guidelines for Serbia, which will assist you during onboarding.

| Locale Name | ISO Code | Region | Mobile Country Code | Dialing Code | Available Routes |
| --- | --- | --- | --- | --- | --- |
| Serbia | RS | Europe | +220 | +381 | Promotional Transactional |

## Promotional Route

| Available Sender IDs | Comparison of Sender IDs | Opt-out Options for Sender IDs |
| --- | --- | --- |
| Alphanumeric Sender ID | - Serbia is a destination that does not require pre-registration of the sender's address. - Branded Sender ID 10 MPS is the default. - High deliverability | Unsubscribe with Short Code |

## Transactional Routes

SenderID approval processes are the same for transactional routes to use [SMS transactional API](/v1/docs/send-transactional-sms).