In 2022, we were still building LudiChat assuming that most of our clients would use it as a web chat tool and treat WhatsApp as a secondary channel. We were wrong. The data from the first 18 months of live deployments changed our view completely — and it is useful context for any business deciding how to reach their customers in 2026.
This is what we found, and what it means for how you should be thinking about customer engagement channels in Singapore and APAC.
The headline number
WhatsApp messages from businesses to opted-in contacts in our deployments consistently opened at rates between 60% and 72%. Email campaigns to the same or comparable audiences opened at 18% to 23%.
That is not a small gap. It is a 3x to 4x difference in the fundamental question of whether your message was read.
Why the gap exists — and why it is structural, not temporary
Email inboxes have a filtering problem. Gmail's Promotions tab, Outlook's Focused/Other split, and aggressive spam filters mean that a meaningful percentage of marketing emails never reach the primary inbox. Of those that do, most are scanned and deleted in under two seconds.
WhatsApp does not have a filtering problem — yet. Messages arrive directly in the conversation thread, the same place where someone receives a message from their family. The notification fires. The message is seen. Whether it is read depends on whether the content is relevant, but the channel at least gets you to the point where relevance can be judged.
"WhatsApp does not get you a sale. It gets you seen. What you do with that attention is still up to you — but you cannot do anything with attention you never had."
The structural reason WhatsApp retains this advantage is that it requires active opt-in. A person cannot receive a WhatsApp business message without having given their number and agreed to receive communication. That opt-in process naturally filters for people who actually want to hear from you — which is why reply rates on WhatsApp (12% to 18% in our deployments) are dramatically higher than email reply rates (typically 1% to 3%).
What this means for LudiPulse and owned audiences
The email open rate problem is compounded by platform dependency. An email list is something you own — you can export it, take it to a different provider, and continue using it regardless of what any platform decides. That ownership is genuinely valuable.
A WhatsApp audience built through LudiPulse has the same ownership characteristic — those are people who consented to receive messages from your business number, not from a platform. If WhatsApp changes its policies, you still have the consent trail and the contact database. The channel may change; the audience relationship does not.
The 340% engagement lift figure we cite reflects what businesses see when they shift their primary ongoing customer communication from email to WhatsApp. It is not a comparison of a single campaign — it is a structural difference in how customers engage with the two channels over time.
When email is still the right choice
WhatsApp is not better for every purpose. Long-form communication — detailed proposals, reports, invoices, contract documents — is better suited to email, where the format supports attachments and the recipient expects to read carefully rather than skim quickly. Regulatory and compliance communication often needs to be in writing with a delivery receipt — email handles this better.
The practical model that works in most SME contexts is: WhatsApp for first-touch, re-engagement, and short-form updates; email for structured documentation and formal follow-up. The AI handles WhatsApp; the human team handles email when it matters.
The APAC context
WhatsApp's dominance in Singapore, Malaysia, and Indonesia is more pronounced than in Western markets. In these markets, WhatsApp is not a supplementary messaging app — it is the primary communication layer for millions of people in both personal and professional contexts. A business that is not reachable on WhatsApp is, for a significant portion of its potential customers, functionally unreachable.
The channel shift we are describing is not a trend. In APAC, it has already happened at the consumer level. The business adoption is lagging — and that lag is an opportunity for SMEs willing to build their WhatsApp audience now, before competitors do.
LudiPulse is the product we built specifically to help businesses build and manage a PDPA-compliant WhatsApp audience. If the numbers above reflect a gap you have in your own business, it is worth a conversation.