Sending SMS to Africa from India: DLT, Sender IDs, OTP Rules and USD Billing

Indian SaaS, fintech and edtech companies can send SMS to users in Africa through an SMS API or SMPP without DLT registration for those messages: DLT is the header and template registration system of India's TCCCPR 2018, run by Indian telecom operators to scrub commercial traffic to their own subscribers. Messages to African numbers are delivered by African networks, which apply their own rules: a sender ID registered in each destination country, local consent and opt-out rules, and, for one-time passwords, controls on international traffic.

This guide explains what carries over from your India setup, what does not, and how to handle OTPs, billing in USD and the IST time difference.

Last reviewed: 28 October 2026. This is general information, not legal advice. Network rules change without notice; check with the regulator or your counsel for edge cases.

DLT: what applies and what does not

TRAI's Telecom Commercial Communications Customer Preference Regulations, 2018 (TCCCPR) protect Indian telecom customers from unsolicited commercial communication. Principal entities register on the operators' DLT platforms, along with their headers (sender IDs), content templates and consent templates, and Indian operators block messages that do not match. The framework is built around Indian telecom service providers and their customers.

When the recipient holds a Kenyan or Nigerian SIM, the message is terminated by Safaricom or MTN Nigeria, not by an Indian operator, so your DLT header and template registrations are not what the receiving network checks. Keep your DLT setup for Indian users and treat each African country as its own registration.

One habit from DLT is worth keeping: write a fixed set of templates per use case. It speeds up sender ID approval and makes messages consistent. In the eSMS API, DLT-style {#var#} placeholders become named merge fields such as {{name}}.

Sender IDs, country by country

eSMS Africa files sender ID registrations with each country's networks. The published fee is USD 100 one-time in most countries, with per-network tables in Kenya and Uganda; the steps for each market are on the sender ID pages, for example Nigeria and Kenya. You can test on the eSMS default sender while yours is being approved.

• Your Indian 6-character header is not automatically valid abroad. You can register the same brand, now up to 11 characters, for example "LearnPro" instead of "LRNPRO".
• Some markets separate transactional and promotional senders; Kenya does on Safaricom. See transactional vs promotional SMS.
• In Nigeria, promotional messages do not reach numbers on the NCC Do Not Disturb list (STOP to 2442).

OTP traffic: why it is treated differently

One-time passwords are the most common SMS traffic Indian platforms send abroad, and they get extra scrutiny. Fraud known as artificially inflated traffic (AIT, or SMS pumping) uses fake sign-ups to trigger large volumes of SMS to numbers that earn revenue for the fraudster; the GSMA describes AIT as traffic generated to earn revenue from delivery for parties in the chain. Networks respond with firewalls and specific pricing for international A2P traffic, and providers watch for unusual OTP patterns.

What this means for your app:

• Expect international-route pricing for cross-border OTPs unless your traffic qualifies for local routes. The table below shows both rates.
• Rate-limit OTP requests per number, per device and per IP, and block number ranges you do not serve.
• Use a managed OTP service. eSMS Verify generates, sends, rate-limits and checks the code, so your app does not store codes or build retry logic.
• Keep OTP text short and GSM-7. LearnPro: your code is 482913. It expires in 10 minutes. Do not share it. fits one segment.

More on this in OTP best practices and how African fintechs use OTP to prevent fraud.

Numbers and live prices

Store numbers in E.164: + country code + national number without the leading zero. Indian forms often default to +91 or a 10-digit pattern; let users choose their country and accept the right length.

Prices are per segment and refresh from the live list. The local route rate applies to traffic the networks treat as local; the international route rate is for cross-border traffic that keeps your sender ID end to end. Which applies is confirmed during onboarding. All 46 live countries are on the pricing page.

Billing: INR or USD?

Your eSMS Africa wallet is in USD. Top up by card (enable international transactions on your company card first) or with crypto, from USD 20, with no monthly minimum and no setup fee for the SMS API. Your bank converts INR to USD at its rate. Crypto is available, but check your own tax and regulatory position in India before using it. Receipts are downloadable for your finance team.

Remember the segment rules when you budget: 160 GSM-7 characters per segment (153 when split), 70 for Unicode (67 when split). Hindi or other Indic scripts, emoji and curly quotes all switch a message to Unicode, so keep African templates in English, French, Portuguese or Swahili as your users prefer.

Time zones from IST

India Standard Time is UTC+5:30 with no daylight saving. African countries are between two and a half and six and a half hours behind.

An evening reminder scheduled in Bengaluru arrives mid-afternoon in Lagos. Schedule each country in its own time, and remember evening limits for promotions, such as Uganda's ban on commercial messages between 19:00 and 06:00 without agreement.

Data protection: DPDP and destination laws

India's Digital Personal Data Protection Act, 2023 applies to your processing of digital personal data in India, and its Rules were notified in November 2025 with phased commencement. Section 16 lets the government restrict transfers to countries it notifies, rather than requiring approval for each transfer; commentators report that no restricted list had been notified and that the cross-border provisions take effect in a later phase. Destination laws apply too, for example Kenya's Data Protection Act 2019 and Nigeria's Data Protection Act 2023. Confirm the position with your counsel.

Example: class reminders to Kenya and Nigeria

import requests

# DLT-style template "Dear {#var#}, your class starts at {#var#}" becomes merge fields:
payload = {
    "sender_id": "LearnPro",
    "text": "LearnPro: Hi {{name}}, your live Maths class starts at {{time}} today. Join from the app.",
    "recipients": [
        {"to": "+254712345678", "name": "Amina", "vars": {"time": "4pm EAT"}},
        {"to": "+2348031234567", "name": "Tunde", "vars": {"time": "2pm WAT"}},
    ],
}
r = requests.post("https://sms.esmsafrica.io/api/messages/send-bulk",
                  headers={"Authorization": "Bearer esms_live_your_key_here"},
                  json=payload, timeout=30)
print(r.status_code, r.json())

Start with a test key (esms_test_...), which simulates sends without charge, and track delivery by webhook. See the OTP guide and the HTTP API docs.

Frequently asked questions

Do I need DLT registration to send SMS to Africa?

No. DLT is part of India's TCCCPR framework for traffic to Indian telecom customers. For African numbers, you register a sender ID with each destination country's networks, which eSMS Africa handles.

Can I use my DLT header in Africa?

Not as is. Register your brand as an alphanumeric sender ID (up to 11 characters) in each country you send to.

Why does an OTP to Nigeria cost more than a marketing message within Nigeria?

Cross-border OTP traffic from foreign brands is often carried on international routes, which networks price higher partly to fight fraud such as artificially inflated traffic. Local-route pricing applies only where the traffic qualifies.

Do you deliver SMS inside India?

Our live coverage is 46 African countries. International destinations, including India, are priced on request; see SMS to India.

Sources

• TRAI: Telecom Commercial Communications Customer Preference Regulations (TCCCPR) page
• TRAI: TCCCPR 2018 regulation text (PDF)
• GSMA: Let's protect the A2P SMS ecosystem (AIT and IRSF)
• Hogan Lovells: India's Digital Personal Data Protection Act 2023 brought into force
• King Stubb & Kasiva: Cross-border data transfers under the DPDP Act
• DLA Piper Data Protection: Kenya, transfers
• NCC consumer portal: Do Not Disturb (DND) service in Nigeria
• GSM 03.38 / 3GPP TS 23.038 character set (overview)

Expanding your Indian product into Africa? Compare live rates, read the schools and universities use case for Kenya, and create an account to get a free test key.