Send SMS to Cuba
from $0.0500/msg

Reach 6.5 million Cuban mobiles with a single operator, ETECSA, at $0.0500 per message. smsroute.cc delivers SMS across Cuba with 280 ms median latency and 92.3% success rate. No KYC at signup—verify only with email. Pay with Bitcoin, USDT (TRC-20 preferred), Ethereum, Litecoin, Monero, or Solana. $5 minimum top-up. 99.9% uptime, 99% tier-1 delivery. Crypto-only, instant account creation, no card required.

Why Cuba's Informal Remittance Networks Run on SMS — and How Global Senders Can Participate Legally

Cuba's economic landscape has evolved under a long-standing embargo that constrains formal banking links and digital payment infrastructure. With 58% mobile penetration and 6.5 million subscribers concentrated on a single carrier (ETECSA), SMS has become the backbone of informal value transfer, microfinance confirmations, and family remittance authentication. Unlike jurisdictions with competing carriers or unregulated markets, Cuba's SMS ecosystem is tightly monitored by MINCOM and routed through a state-controlled monopoly, making it one of the world's most regulated A2P channels.

For fintech platforms, crypto exchanges, and remittance services targeting the Cuban diaspora, SMS is non-negotiable: it verifies transactions, confirms OTPs, and notifies recipients of incoming funds even when internet access is intermittent. Traditional payment rails are fragmented; SMS SMS connectivity is near-universal. This paradox—strict regulation paired with critical utility—defines the opportunity and the compliance burden for international senders.

smsroute.cc operates within MINCOM's approval framework and the US Office of Foreign Assets Control (OFAC) sanctions regime, ensuring that routes remain open for legitimate use cases (fintech, healthcare, government notifications) while screening for prohibited activities. This dual-compliance stance is essential: a single route violation can result in permanent carrier de-listing, cutting off entire user bases from SMS delivery.

Mobile Operators and Network Interconnect

ETECSA (Empresa de Telecomunicaciones de Cuba, S.A.) — 100% market share. ETECSA is Cuba's sole mobile operator, owned and managed by the state. All SMS traffic, domestic and international, routes through ETECSA's MCC/MNC 368/01 network. International senders connect via bilateral roaming agreements or through international SMS hubs (like smsroute.cc) that maintain direct agreements with ETECSA. ETECSA enforces all MINCOM policies and has authority to reject messages at the gateway level. No alternative carriers exist; message rejection from ETECSA means the message does not reach the recipient.

ETECSA's gateway is known for strict content filtering and rate-limiting. Senders who exceed typical volumes (e.g., >10,000 messages per day to a single aggregator) may trigger rate limits or manual review. smsroute.cc manages these thresholds transparently and advises clients on sustainable sending rates per use case.

How to Send SMS to Cuba in 3 Steps

Step 1: Create a Free Account

Visit smsroute.cc and sign up with an email address. No phone number, ID, or corporate registration required. Your account is active immediately. You will receive an API key and REST endpoint URL.

Step 2: Top Up with Cryptocurrency

Fund your account wallet with Bitcoin, USDT (TRC-20 preferred), Ethereum, Litecoin, Monero, or Solana. Minimum top-up is $5 USD. Credits are credited in real-time; no bank transfer delays, no card processing holds. Your balance is always visible in the dashboard.

Step 3: Send SMS and Monitor Delivery

Use the REST API, Python SDK, or SMPP to send messages. Format recipients in E.164 (e.g., +53 51234567). Monitor delivery reports in real-time and receive webhooks for failed sends. Before launching a production campaign, ensure you have obtained MINCOM approval.

REST API Example (cURL):

Python Example:

smsroute.cc's REST API returns delivery status in real-time. Status codes include "DELIVERED", "PENDING", "FAILED", and "REJECTED". REJECTED typically indicates content policy violation or invalid destination; inspect the error message and retry only after correcting the issue or obtaining MINCOM clarification.

curl -X POST https://api.smsroute.cc/v1/sms/send \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "to": "+53 51234567",
    "message": "Your OTP is 123456",
    "sender_id": "12345"
  }'

import requests
import json

api_key = "YOUR_API_KEY"
url = "https://api.smsroute.cc/v1/sms/send"
headers = {
    "Authorization": f"Bearer {api_key}",
    "Content-Type": "application/json"
}
payload = {
    "to": "+53 51234567",
    "message": "Your OTP is 123456",
    "sender_id": "12345"
}

response = requests.post(url, headers=headers, json=payload)
print(response.json())

import fetch from "node-fetch";

const apiKey = process.env.SMSROUTE_API_KEY;

const res = await fetch("https://api.smsroute.cc/messages", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    to: "+535551234567",
    from: "smsroute",
    text: "Your verification code is 384921",
  }),
});

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

<?php
$apiKey = getenv('SMSROUTE_API_KEY');

$payload = json_encode([
    'to'   => '+535551234567',
    'from' => 'smsroute',
    'text' => 'Your verification code is 384921',
], JSON_UNESCAPED_UNICODE);

$ch = curl_init('https://api.smsroute.cc/messages');
curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'Authorization: Bearer ' . $apiKey,
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => $payload,
]);

echo curl_exec($ch);
curl_close($ch);

package main

import (
    "bytes"
    "encoding/json"
    "fmt"
    "io"
    "net/http"
    "os"
)

func main() {
    payload, _ := json.Marshal(map[string]string{
        "to":   "+535551234567",
        "from": "smsroute",
        "text": "Your verification code is 384921",
    })

    req, _ := http.NewRequest("POST",
        "https://api.smsroute.cc/messages",
        bytes.NewBuffer(payload))
    req.Header.Set("Authorization", "Bearer "+os.Getenv("SMSROUTE_API_KEY"))
    req.Header.Set("Content-Type", "application/json")

    resp, err := http.DefaultClient.Do(req)
    if err != nil { panic(err) }
    defer resp.Body.Close()

    body, _ := io.ReadAll(resp.Body)
    fmt.Println(string(body))
}