Bulk SMS in Ecuador: ARCOTEL, Sender ID and Data Law Guide
Bulk SMS Ecuador guide (SMS masivos): ARCOTEL, sender set-up with Claro, Tigo and CNT, the 2021 Data Protection Act, consent, and Spanish accents in GSM-7.
By OmniChannels.ai Editorial Team · Reviewed by BroadNet Messaging Solutions Team
SMS & OTP
Short answer
To send bulk SMS in Ecuador (SMS masivos), use a provider with routes to Claro, Tigo and CNT, confirm your sender set-up with the operators, and send promotions only to people who agreed to receive them. Ecuador's Organic Law on Personal Data Protection, published in 2021, makes consent and the right to object central. Keep consent records, offer a clear opt-out, and expect accented Spanish to use Unicode at 70 characters.
On this page
- What rules apply to bulk SMS in Ecuador?
- What does Ecuador's data protection law mean for SMS marketing?
- How do sender IDs and short codes work in Ecuador?
- Which operators carry SMS in Ecuador?
- How should you separate OTP and promotional traffic?
- How do Spanish accents affect SMS length?
- How do opt-outs work?
- When should you send?
- A worked example: a Quito coffee roaster
- What are the common mistakes?
- How OmniChannels.ai helps
Key takeaways
- ARCOTEL is the telecom regulator in our regulation data; sender requirements are set by the operators, with a typical lead time of 7 to 14 business days, and formats are alphanumeric where supported or numeric long codes and short codes.
- The Organic Law on Personal Data Protection (LOPDP) was published in the Registro Oficial on 26 May 2021, and its sanctions regime began two years after publication; plan on documented, specific consent for marketing.
- Three networks appear in our coverage data, all with direct routes: Claro Ecuador (740-01), Tigo Ecuador (740-00) and CNT EP (740-02). The network long known as Movistar was acquired by Millicom's Tigo in a deal reported as closed on 30 October 2025.
- Spanish letters such as e with an acute accent and n with a tilde fit the GSM 7-bit alphabet, but a, i, o and u with an acute accent do not, so a single one switches the message to Unicode at 70 characters (67 per part).
- We found no regulator-published time-of-day window for promotional SMS in Ecuador; schedule promotions for local daytime and keep OTPs and alerts on a transactional route.
This guide is for retail, banking, education and service teams that want to send business SMS to mobile numbers in Ecuador: OTPs, delivery alerts, reminders and promotions. It explains which rules apply, how sender set-up works, what the 2021 personal data law means for marketing, and how Spanish accents change message length. It is a practical overview, not legal advice; confirm requirements with Ecuadorian counsel and the operators before you launch.
What rules apply to bulk SMS in Ecuador?
Three layers apply: telecom regulation and operator policy, personal data law, and your own consent records. None is a single "bulk SMS law", so you assemble the picture from each.
| Layer | What it covers | Where to check |
|---|---|---|
| ARCOTEL and the operators (Claro, Tigo, CNT) | Telecom regulation, sender set-up, routes, filtering | arcotel.gob.ec |
| Organic Law on Personal Data Protection (LOPDP) | Lawful basis, consent, data subject rights | Law text |
| Your own records | Proof of when and how each number agreed | Your CRM or consent log |
Our regulation data names ARCOTEL (Agencia de Regulación y Control de las Telecomunicaciones) as the regulator and records that sender requirements are set by the operators, so the rule that matters on launch day is the one your operator route enforces.
What does Ecuador's data protection law mean for SMS marketing?
It treats a phone number linked to a person as personal data, so you need a lawful basis to message it, and for marketing that basis is in practice consent. The Ley Orgánica de Protección de Datos Personales was published in the Registro Oficial Supplement No. 459 on 26 May 2021. Its corrective measures and sanctions regime began two years after publication, so it is now fully enforceable. A Superintendency of Personal Data Protection supervises it.
The Act gives people rights over their data, including a right to object to processing (article 16). We have not verified the exact wording on direct marketing, so we do not quote it. What is safe in any case is the routine below.
- Capture consent with a record: the exact wording shown, the date and time, the channel and the number.
- Name the sender and the purpose at sign-up, for example "Ofertas de Café Quito por SMS".
- Honour opt-outs immediately and keep one suppression list across campaigns and channels.
- Keep evidence so you can answer a complaint.
- Do not buy lists. Purchased numbers have no consent trail.
Our regulation data adds that opt-in must be verifiable and that consent records are kept as the local data protection law requires. Our opt-in consent generator drafts wording, and the guide to opt-in consent across channels shows how to record it. See also opt-in and opt-out.
How do sender IDs and short codes work in Ecuador?
Ecuador supports alphanumeric sender IDs where the operator supports them, plus numeric long codes and short codes. The operators set the requirements and the process is confirmed at onboarding. Our published lead time is 7 to 14 business days; treat it as typical, not guaranteed.
Support differs by network, so one campaign can show your brand name on one handset and a number on another. Test on every operator before you promise a brand-name display to your marketing team.
| Step | What to do |
|---|---|
| 1. Classify | Decide which traffic is transactional (OTP, alerts) and which is promotional, and plan one sender for each |
| 2. Choose names | Use your registered business or brand name; avoid names that imitate banks, operators or public bodies |
| 3. Prepare documents | Company registration papers and an authorisation letter naming the senders and your provider |
| 4. Submit | Your provider files with the operators; track each approval |
| 5. Test | Send an OTP and a promotion to Claro, Tigo and CNT handsets and check what each shows |
Our sender ID letter generator drafts the letter, and you can check the position with the sender ID checker or the Ecuador sender ID page. If you want us to prepare and file the registration with you, see registrations; approval decisions stay with the operators and regulators. For formats, read SMS sender ID types explained, and see short code and long code.
Which operators carry SMS in Ecuador?
Three mobile networks appear in our coverage data, each with a direct route.
| Operator | MCC-MNC |
|---|---|
| Claro Ecuador | 740-01 |
| Tigo Ecuador | 740-00 |
| CNT EP | 740-02 |
Many readers still search for "Movistar Ecuador". Press reports say Millicom, which runs the Tigo brand, announced the close of its purchase of Telefónica's Ecuador business on 30 October 2025, so expect operator names in older documents to differ from today's.
Read delivery reports per operator, not as one blended figure. A healthy total can hide a weak network, and our guide to improving SMS delivery rates shows how to diagnose it.
How should you separate OTP and promotional traffic?
Keep OTPs, order alerts and service messages on their own sender and route, and promotions on another. A promotion inside an OTP puts login codes at risk if the promotional route is filtered or a customer complains.
| Traffic | Example | Practice |
|---|---|---|
| Transactional | OTP, payment confirmation, delivery alert | No offer inside; own sender; any hour |
| Promotional | Sale, new product, loyalty offer | Consented numbers only; opt-out in the message; daytime schedule |
| Mixed | "Tu pedido salió. Tienes 10% de descuento en el próximo" | Avoid; the offer makes it promotional |
For OTP design and security, read our OTP authentication messages guide.
How do Spanish accents affect SMS length?
Plain Spanish fits the 160-character GSM 7-bit alphabet only if every character is in it. The alphabet includes the e with an acute accent, the n with a tilde, the u with a diaeresis, and the marks for inverted question and exclamation, but not the acute-accented a, i, o or u, so a single "código" or "sábado" turns the whole message into Unicode with 70 characters (67 per part). See GSM-7, Unicode SMS and concatenated SMS.
| Encoding | Single message | Per part when concatenated |
|---|---|---|
| GSM 7-bit | 160 characters | 153 |
| Unicode (UCS-2) | 70 characters | 67 |
These examples were counted against the limits:
| Message | Encoding | Characters | Parts |
|---|---|---|---|
Cafe Quito: tu codigo es 482913. No lo compartas con nadie. |
GSM-7 | 59 | 1 |
Café Quito: tu código es 482913. No lo compartas con nadie. |
Unicode | 59 | 1 |
Café Quito: tu pedido 2087 llega mañana entre las 10 y las 12 h. |
GSM-7 | 64 | 1 |
Cafe Quito: 2x1 en cafe de grano hasta el domingo. Detalles: cafequito.example/o Responde STOP para no recibir mas. |
GSM-7 | 115 | 1 |
Café Quito: 2x1 en café de grano hasta el domingo. Detalles: cafequito.example/o Responde STOP para no recibir más. |
Unicode | 115 | 2 |
Row 3 shows that "Café" and "mañana" cost nothing because the e with an acute accent and the tilde n are in the alphabet, while the accented "ó" in row 2 and "á" in row 5 switch the whole message to Unicode. Many brands drop accents in OTPs and alerts and keep correct spelling in campaigns where a second part is acceptable. Check final copy in the SMS character counter; see SMS character limits and Unicode.
How do opt-outs work?
Offer a one-step opt-out in every promotional SMS and apply it to all channels. Our regulation data lists STOP as a keyword honoured network-wide. It also lists "SAIR", which is a Portuguese word and does not suit an Ecuadorian audience, so write a clear Spanish instruction, such as "Responde STOP para no recibir mas", and test the keyword you choose before launch. Do not send a promotion to anyone who has asked to stop.
When should you send?
We have not found a regulator-published time-of-day window for promotional SMS in Ecuador, and our regulation data records none. Agree sending hours with your provider, send promotions in local daytime (mainland Ecuador is UTC-5, and the Galápagos are one hour behind) and avoid late evenings. OTPs and alerts can go at any hour. The send time planner helps schedule campaigns, and SMS marketing rules by country compares hours across markets.
A worked example: a Quito coffee roaster
"Café Quito" (synthetic) has 12 shops and an online store, and wants OTPs, delivery alerts and a weekly offer.
- It sets up two senders, one for transactional and one for promotional traffic, and tests both on Claro, Tigo and CNT.
- It collects consent at checkout and in store, storing the wording, timestamp and number, and shows "Ofertas por SMS" with a clear opt-out.
- OTPs and alerts use short copy without acute accents so they stay at one part.
- The weekly offer is checked against its suppression list, scheduled for local daytime and sent with correct spelling, accepting two parts.
- Opt-outs from replies feed one list that also covers WhatsApp and email.
What are the common mistakes?
- No consent evidence. Without a timestamp and source you cannot answer a complaint.
- Assuming one sender display everywhere. Test each operator.
- Look-alike sender names that imitate banks, operators or public bodies.
- Ignoring encoding. One accented vowel turns a 160-character message into a 70-character one.
- Mixing OTP and promotion on one sender.
- Using the Portuguese keyword. "SAIR" means nothing to Spanish speakers.
- Treating lead times as promises. Plan buffer beyond 7 to 14 business days.
How OmniChannels.ai helps
OmniChannels.ai is powered by BroadNet, which has direct routes to Claro, Tigo and CNT in our coverage data. We prepare and file sender registration with you, support Spanish content, scheduled sends and WhatsApp with SMS fallback, and give you per-operator delivery reports, with SMPP 3.4 for high volume. For indicative list prices, see the Ecuador SMS pricing page, then book a demo. Small team? Our SMS marketing guide for small businesses covers the basics.
Frequently asked questions
Is bulk SMS legal in Ecuador?
Yes. Businesses send OTPs, alerts and marketing SMS, provided they use a legitimate route, hold a lawful basis for contacting people and honour opt-outs. No single statute is called a bulk SMS law, so the rules come from ARCOTEL, the operators and the personal data law. Confirm the details with Ecuadorian counsel before a large campaign.
Do I need consent to send promotional SMS in Ecuador?
Plan on documented consent. Our regulation data calls for verifiable opt-in with consent records kept, and the Personal Data Protection Act builds on consent and on rights to object and withdraw. Keep the wording shown, the date and time, the channel and the number for every opt-in, and honour withdrawal quickly.
Can I use an alphanumeric sender ID in Ecuador?
Our regulation data says alphanumeric IDs are available where supported, with numeric long codes and short codes as alternatives, and that the operators set the requirements. Support can differ by operator, so test the sender on Claro, Tigo and CNT handsets before launch. We can prepare and file the registration with you.
Why does my Spanish SMS split into two parts?
Letters such as a, i, o and u with an acute accent are not in the default GSM 7-bit alphabet, so one of them switches the whole message to Unicode, which holds 70 characters (67 per part). Letters such as e with an acute accent and n with a tilde, and the marks for inverted question and exclamation, are inside it. Test final copy in a character counter.
How long does sender registration take in Ecuador?
Our published lead time for Ecuador is 7 to 14 business days. That is a typical range, not a promise. Operators review the application, and missing company documents can add time. Build it into your launch plan and use our team to prepare and file the registration.
Which operators carry SMS in Ecuador?
Our coverage data lists Claro Ecuador, Tigo Ecuador and CNT EP, each with a direct route. The network that used to trade as Movistar was acquired by Millicom, which operates the Tigo brand. Read delivery reports per operator so a weak network is not hidden by a good blended rate.
Sources
- ARCOTEL, Agencia de Regulación y Control de las Telecomunicaciones
- Entra en vigencia la Ley Orgánica de Protección de Datos Personales, NMS Law
- Ley Orgánica de Protección de Datos Personales (text)
- Millicom arriba a Ecuador tras finalizar adquisición de Telefónica, DPL News
- 3GPP TS 23.038: Alphabets and language-specific information
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