Send SMS to Serbia
from $0.0110/msg

smsroute.cc delivers SMS to 7.9 million Serbian mobile subscribers via Telekom Srbija (42%), Vodafone Serbia (34%), T-Mobile Serbia (20%), and Yettel (4%). Our crypto-only gateway charges $0.0110 USD per SMS — 54% cheaper than Twilio's $0.0239 — with 220 ms median latency, 98.5% delivery success, and 99.9% uptime. no ID upload, no KYC gate, no incorporation papersuments at signup. Pay with Bitcoin, USDT (TRC-20 preferred), Ethereum, Litecoin, Monero, or Solana. Minimum $5 top-up. GDPR and Serbian ePrivacy Law compliant. RZA registry integration for sender ID approval.

Why Cyrillic SMS Segments Cut Your Serbia Character Budget in Half

Serbian uses the Cyrillic script — а, б, в, г, д, е, ж, з, и, ј, к, л, љ, м, н, њ, о, п, р, с, т, ћ, у, ф, х, ц, ч, џ, ш, ђ — which requires UCS-2 (Unicode) character encoding to transmit over SMS. Unlike Latin characters, which fit 160 per segment under GSM-7 encoding, UCS-2 segments carry only 70 characters. This means a 200-character promotional message in Serbian Cyrillic will be billed as 3 segments (70 + 70 + 60), not 2. If you send 10,000 SMS to Serbian numbers and assume average Cyrillic message length of 120 characters, budget for 25,000 billable segments, not 10,000.

Concrete example: The word "Добродошли у нашу услугу" (Welcome to our service) is 26 Cyrillic characters. Under UCS-2, it occupies 26 of 70 available bytes in one segment, leaving room for another 44 characters. A second marketing line, "Kликните овде да активирате" (Click here to activate), is 29 characters. Both messages together — 55 Cyrillic characters — fit in a single UCS-2 segment. A 160-character Latin equivalent would also fit in one segment under GSM-7. The cost per segment is identical, but you can cram fewer words into each Cyrillic segment.

GSM-7 and UCS-2 operate on the same per-segment pricing model. smsroute.cc bills $0.0110 per segment, regardless of encoding. The difference is in your character budget: plan for 2–3× higher segment consumption when targeting Serbian-language audiences. Character calculators in the smsroute.cc dashboard display real-time segment counts as you compose messages.

Mobile Operators and Network Reach

Telekom Srbija (42% market share): The dominant carrier in Serbia with the largest network footprint. Accepts alphanumeric sender IDs registered with the RZA. Interconnect agreements with smsroute.cc are established and carry standard rates. Delivery is reliable across urban and rural areas.

Vodafone Serbia (34% market share): Second-largest operator. Good urban coverage and growing rural footprint. RZA-registered sender IDs are prioritized. Interconnect is direct; no carrier-specific routing delays.

T-Mobile Serbia (20% market share): Mid-market carrier with strong city coverage. SMS delivery is consistent. Sender ID rules align with RZA guidelines.

Yettel (4% market share): Regional carrier with niche market share. Interconnect is available but carries slightly higher latency in some areas. Included in our standard routing to ensure comprehensive reach.

smsroute.cc routes SMS across all four operators using real-time load balancing. If one operator is congested, traffic is distributed to others while respecting your sender ID and consent rules. This ensures 98.5% delivery success and 220 ms median latency across the entire Serbian market.

GDPR and Serbian ePrivacy Consent Framework

Serbia is a candidate country for EU accession and applies the General Data Protection Regulation (GDPR) to SMS campaigns that include personal data of EU residents. Domestically, the Law on Electronic Communications (which incorporates Serbian ePrivacy requirements) governs all SMS to Serbian residents and requires explicit opt-in consent before sending promotional messages.

The RZA (Regulatory Authority for Electronic Communications and Postal Services, https://www.rra.org.rs/) enforces these rules. Key requirements:

• Explicit opt-in: Recipients must affirmatively consent to receive promotional SMS before you send. Checkbox pre-ticking or silence-as-consent is not allowed.
• Soft opt-in for transactional messages: If you have an existing business relationship with the recipient (e.g., they signed up for an account, made a purchase, or initiated a support ticket), you may send transactional SMS (OTP, account confirmations, payment alerts) under soft opt-in, provided you offer an easy opt-out mechanism in every message.
• Sender ID registration: Alphanumeric sender IDs must be registered with the RZA registry to prevent spoofing and ensure carrier acceptance. smsroute.cc coordinates this during onboarding.
• Audit trail: Maintain records of all consent (date, time, method, IP address) for at least 3 years. RZA may request these records during compliance audits.
• Quiet hours: Do not send promotional SMS between 21:00 and 09:00 CET. Sundays are non-delivery days. Transactional messages are exempt but should still respect recipient preferences.

Violations may result in enforcement action by the RZA, including carrier-level message blocking, sender ID suspension, and fines in accordance with Serbian telecommunications law. smsroute.cc maintains a consent management API endpoint where you can upload opt-in records and query recipient status before sending.

How to Send SMS to Serbia in Three Steps

Step 1: Create a smsroute.cc Account
Visit https://smsroute.cc and click "Sign Up." Enter your email address. no ID upload, no KYC gate, no incorporation papersuments required. Confirm your email and log in to the dashboard.

Step 2: Top Up with Cryptocurrency
Navigate to Billing → Add Funds. Select your preferred cryptocurrency:

• Bitcoin (BTC)
• USDT on Tron (TRC-20 preferred for low fees)
• Ethereum (ETH)
• Litecoin (LTC)
• Monero (XMR)
• Solana (SOL)

Minimum deposit is $5 USD equivalent. Your balance is credited upon the first blockchain confirmation (typically 1–5 minutes).

Step 3: Send SMS to Serbian Numbers in E.164 Format
Use the REST API to send SMS. Format recipient numbers as +381 followed by the local mobile number with the leading 0 dropped. Serbian mobile numbers start with 6, so the pattern is +381 6x xxx xxxx.

Example: A Serbian mobile number listed as 061 123 4567 becomes +381 61 123 4567 in E.164.

cURL Example:

Python Example:

Verify that the recipient has given explicit opt-in consent before sending. Monitor delivery status in real time via webhook callbacks or REST polling. The API returns a message ID for tracking. Delivery reports arrive within seconds of carrier handoff.

curl -X POST https://api.smsroute.cc/v1/sms/send \
  -H "Authorization: Bearer $SMSROUTE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+3815551234567",
    "from": "smsroute",
    "text": "Your verification code is 384921"
  }'

import os, requests

resp = requests.post(
    "https://api.smsroute.cc/v1/sms/send",
    headers={"Authorization": f"Bearer {os.environ['SMSROUTE_API_KEY']}"},
    json={
        "to": "+3815551234567",
        "from": "smsroute",
        "text": "Your verification code is 384921",
    },
    timeout=10,
)
resp.raise_for_status()
print(resp.json())

import fetch from "node-fetch";

const apiKey = process.env.SMSROUTE_API_KEY;

const res = await fetch("https://api.smsroute.cc/v1/sms/send", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    to: "+3815551234567",
    from: "smsroute",
    text: "Your verification code is 384921",
  }),
});

console.log(await res.json());