SMS Marketing: Still the Highest Open Rate in 2026?

2. What Is SMS Marketing and Does It Really Get 98% Opens?

Quick Answer: SMS marketing sends commercial texts to people who agreed to receive them: a gateway hands the message to the carriers, who push it to the handset with no app and no algorithm in the way. The 98% open rate is real as reach, but estimated from lock-screen previews.

That “no algorithm” clause is the whole product. Every other channel puts something between you and the customer; SMS puts a carrier there, and carriers deliver. You need three things: a consented list (with a record of how each person agreed — in Malaysia that record is the legally interesting part), a gateway that hands messages to Maxis, CelcomDigi and U Mobile, and a registered sender ID that names you honestly.

Two categories ride that pipe and behave nothing alike. Transactional messages are ones the customer is waiting for: the OTP, the “order shipped”, the reminder. Promotional messages are ones you want them to want: the sale, the voucher. The industry sells both as “SMS marketing” and reports one open rate across both — where the confusion starts. Our explainer on what email marketing is covers the consent mechanics SMS inherits; the 2026 SME playbook places messaging among the channels.

So does it really get 98% opens?

Effectively yes — but estimated, not measured. Email’s open rate is instrumented: a 1×1 image loads, a server logs it. SMS has no equivalent hook, so an “open” is a delivery receipt plus an assumption. Notice what that concedes: it measures exposure, the cheapest thing in marketing. Billboards have a 100% open rate.

• Real as a reach claim. SMS lands in front of nearly everyone you send it to. Nothing else matches that.
• Empty as a performance claim. It says nothing about whether the message was wanted or acted on.
• Inflated by OTP traffic. People open OTPs at nearly 100% because they are mid-login. Blend those in and your sale blast inherits a score it never earned.

So the head term has an awkward answer: SMS holds the crown for the metric that matters least. Its case must be made further down the funnel — the reckoning conversion rate forces on every channel.

3. What Are Malaysia’s SMS Marketing Rules in 2026?

Quick Answer: Malaysia now prohibits unsolicited commercial electronic messages outright. Amendments gazetted in February 2025 inserted Section 233A into the Communications and Multimedia Act 1998, and MCMC has consulted on a framework built on consent, sender identity, an opt-out and an advertisement label.

Global SMS guides skip this part, and it changes the maths for anyone sending to Malaysian numbers. MCMC’s consultation paper on unsolicited commercial electronic messages (13 August 2025) sets the shape:

Read the third row again — it quietly ends the argument this article started with. An SMS has no subject line, so the ad tag goes in the first line of the body: the exact text the lock screen previews. The 98% open rate is measured at that lock screen, which must now say “this is an ad” first.

The pressure is real: MCMC recorded 5.29 million fraudulent SMS cases in 2024, complaints up nearly 200% since 2021. Scammers trained Malaysians to distrust unfamiliar numbers, and legitimate senders inherit the suspicion — see our PDPA guide for marketers on keeping consent records.

4. How Does SMS Compare to WhatsApp and Email in Malaysia?

Quick Answer: SMS wins reading, then loses everything after. Across ZenWeb-managed Malaysian accounts, SMS is read by 94% of recipients but acted on by 1.8%, while WhatsApp is read by 83% and acted on by 9.1% — five times the action at a third of the cost per reply.

The tallest read bar sits beside the shortest action bar: the message arrives, gets seen, then has nowhere to go. WhatsApp wins not because people like it more — it carries a button, an image and a reply, and the customer is already in a thread with you. SMS asks a reader to leave and go find you. See turning WhatsApp chats into sales and our EDM guide.

One caveat keeps SMS honest. Malaysia had 44.0 million active cellular connections in late 2025, equal to 122% of the population, per DataReportal — some carrying only voice and SMS. Every one is reachable by text and nothing else on this table.

5. Which SMS Types Actually Earn Their Send?

Quick Answer: The ones the customer was already waiting for. Across ZenWeb-managed Malaysian accounts, OTPs are acted on 99.1% of the time and draw almost no complaints, while promotional blasts are acted on 1.8% and trigger a 4.7% opt-out — shrinking their own list.

Read the promotional row as an accounting entry, not a marketing result: it converts 1.8% and destroys 4.7%. Do that monthly and the list is gone inside two years — and the list was the asset.

The other three rows are barely marketing — operations that travel by text, working because the customer wanted them: SMS performs in proportion to how much the recipient expected it. A 48% action rate on a reminder is a no-show prevented, which is cheaper than finding new buyers.

6. What Does SMS Marketing Cost in Malaysia?

Quick Answer: Around RM 0.09 to RM 0.13 per message on local volume rates — the least useful number in the decision. The same 11 sen buys an action for 18 sen transactionally and RM 6.40 promotionally. Identical unit price, cost per outcome 35 times apart.

The first two rows are nearly flat. The third is where the decision lives — the row no pricing page shows you, because pricing pages sell messages, not outcomes. (The cheapest rate assumes a large prepaid pack, and past 160 characters you bill per segment.)

A promotional WhatsApp costs 3 sen more to send and RM 4.50 less per action. If the budget conversation is about cost, SMS loses on the only line that counts. Our WhatsApp pricing and email marketing fees breakdowns put the ladder side by side; our advertising comparison widens it to paid media.

7. Is SMS Marketing Dying in Malaysia?

Quick Answer: No — it is changing job. Across ZenWeb-managed Malaysian accounts, total SMS volume fell only 15% between 2021 and 2026, but the promotional share collapsed from 54% to 16%. Businesses did not stop texting. They stopped selling by text.

Read the last column first: the volume index barely moves, 100 down to 85 across five years. If SMS were dying it would fall off a cliff. Now read the first column, which drops by two thirds. Promotional text died; the pipe stayed busy with OTPs, Shopee tracking numbers and clinic reminders.

So “is SMS dead?” is badly posed. Vendors cite the flat volume line; sceptics cite the promotional collapse. Both read real data. The channel is doing a different job than the one it is sold for — worth watching across an omnichannel mix.

8. How Do You Run an SMS Campaign That Works?

Quick Answer: Send messages people are waiting for, and make the next step something they can do without leaving the message. Six steps: pick a job SMS wins, get provable consent, register a sender ID, write to the lock screen, give a no-click action, and measure it.

1. Pick a job SMS wins. Time-critical, must-arrive, no-click-needed: an OTP, a delivery alert, a booking reminder. If it needs a landing page, it is a WhatsApp or email job.
2. Collect consent you can prove. An unchecked box, keyword opt-in or form, with a timestamp. Implied consent expires: 24 months from a purchase, 6 from a dead enquiry.
3. Register a sender ID that names you. An unrecognised number reads as a scam first. Your business name is required anyway — use it as a trust signal.
4. Write to the lock screen. Roughly 40 characters preview, so front-load the useful fact — “Your order arrives today 2–5pm” — and stay under 160.
5. Give an action that needs no click. Reply Y to confirm. Show this text at the counter. Sending someone hunting for a browser leaks most of the 94% who read it.
6. Measure the action, not the open. Unique codes, reply keywords, a dedicated number. If you cannot count what the send caused, you will quote the open rate to yourself.

Step five matters most: a campaign that depends on a tap is a campaign for a channel you are not using. Marketing automation handles triggering; segmentation keeps the alert from people who never ordered.

9. What Are the Most Common SMS Marketing Mistakes?

Quick Answer: Buying a list, blasting everyone the same message, and treating the open rate as a result. The first is prohibited in Malaysia, the second burns 4.7% of your list per send, and the third reports a number that never put money in the till.

• Buying or scraping numbers. Harvested lists are prohibited — and were always 11 sen a head to annoy strangers.
• Blasting the whole database. A relevant text to 800 people beats an irrelevant one to 8,000.
• Reporting the open rate as success. A report leading with 98% is hiding the 1.8%.
• Sending at the wrong hour. SMS has no snooze. A 9pm promo is not read later, it is resented now.
• Making the text a worse WhatsApp. A catalogue in 160 characters is a bad version of a better channel — our guide on following up without being pushy covers matching channel to ask.
• Forgetting the message is an ad by law. Disguising a promo as a service message invites a complaint.

10. How Do You Know Your SMS Marketing Is Working?

Quick Answer: Track four numbers and ignore the fifth. Delivery rate, action rate, opt-out rate and cost per action tell you whether the channel earns its place. The open rate tells you nothing you did not know when you pressed send.

• Delivery rate — above 95%. Below that, your list has decayed or your route is poor. The one thing you are actually paying for.
• Action rate — replies, redemptions, confirmations. The only number proving the message did something.
• Opt-out rate — the cost side. Above 2% means you are consuming the asset. Track it cumulatively.
• Cost per action — spend divided by actions. The number that compares SMS against WhatsApp honestly.

One habit makes all four legible: give SMS its own trackable action — a code, a keyword, a dedicated number — so credit is not claimed by whichever channel was touched last. It is the gap that appears when WhatsApp enquiries go untracked, and why mapping the journey matters before arguing which channel won.

11. Conclusion

SMS still has the highest open rate in 2026. The honest answer to the title is yes — and it should change almost nothing about your plan.

Its one superpower is arrival: 44 million Malaysian connections, no data needed, no algorithm’s permission. Every message that must arrive should go by text. Everything past arrival belongs elsewhere — WhatsApp converts five times better at a third of the cost, and the framework now asks a promo text to announce itself as an ad on the very lock screen where its open rate is counted. Not decline. A narrower job.

ZenWeb builds messaging mixes around cost per action — the discipline behind ranking on Google, building a brand customers remember and B2B leads that close. Want the reminder that saves a booking? Send the text. Want the sale? Try loyalty, referral or community marketing, or short-form video, timed around moments like Hari Raya. More at ZenWeb.

12. Frequently Asked Questions

Is SMS marketing legal in Malaysia?

Yes, with consent. Amendments gazetted in February 2025 inserted Section 233A into the Communications and Multimedia Act 1998, prohibiting unsolicited commercial electronic messages. MCMC’s proposed framework requires consent, honest sender identification, an advertisement label and a free opt-out honoured within 5 business days. Bought lists are prohibited.

What is a good SMS open rate?

Almost any of them, which is why it is a poor target. SMS open rates run 90–98% across every list, because the metric counts lock-screen exposure rather than reading. Use action rate instead: roughly 1.8% for promotional sends, 48–99% for expected messages.

How much does SMS marketing cost in Malaysia?

Around RM 0.09 to RM 0.13 per message on local volume rates, more for small top-ups and international routes. Messages over 160 characters bill per segment. The useful figure is cost per action: roughly RM 0.18 transactional versus RM 6.40 promotional, against RM 1.90 on WhatsApp.