WhatsApp drip campaign guide: sequences, costs, rules (2026)

Picture a weekend roadshow. A QR code on your booth brings in 200 WhatsApp leads by Sunday night, and by Wednesday your team has messaged a third of them by hand. A WhatsApp drip campaign closes that gap by sending each lead a planned sequence of automated WhatsApp messages, timed to what they do. This guide covers six sequences, what each step costs since 1 October 2026, and when to stop.

What is a WhatsApp drip campaign?

A WhatsApp drip campaign (or WhatsApp drip marketing) is an automated sequence that starts with a trigger, sends timed steps, and ends with an exit rule such as a reply, a purchase or an opt-out. Unlike a single nudge, such as a WhatsApp follow up, a typical enquiry sequence may take days: the customer asks, you answer; on day 1 you send the detail they wanted; on day 3 you send an offer only if they have not replied.

How is a drip campaign different from a broadcast or a follow-up?

How does a WhatsApp drip campaign work?

Every drip runs the same loop: trigger, wait, send, check, exit.

What triggers a d

rip?

A Click to WhatsApp ad lead, a QR code sc

an, a purchase, booking or abandoned cart, a label change, or a reply to a broadcast.

Fixed delays or reply-based branches?

Use a fixed delay for predictable gaps, such as a day-before reminder. Use a reply-based branch when the next step depends on the customer. It also saves money, because a customer who has answered never receives the next billed message.

When should a drip stop?

On a reply, a conversion, an opt-out or when the goal is met. Hand high-intent replies, such as "how much?", to a person.

What do WhatsApp's rules mean for drip campaigns in 2026?

Which drip steps need an approved template?

The customer service window lasts 24 hours from the customer's last message. Inside it you can send free-form messages. Outside it, a step must be an approved template. A reply reopens the window.

What does each drip message cost?

Meta charges per delivered message, by category and market. From 1 October 2026, each business number gets 1,000 free delivered service messages a month, then pays per message. Utility templates sent inside an open window are charged too.

Rates vary by country, so check our WhatsApp Business API pricing guide before you budget.

WhatsApp messaging fees are subject to change from time to time based on Meta's official pricing and rate structures, as well as other factors determined by SleekFlow.

Does Meta limit how many drip messages one person gets?

For marketing templates, yes. Meta says the per-user limit adapts to a person's recent engagement and is not published. A blocked send returns error 131049, and Meta advises waiting at least 24 hours before resending. Your portfolio also has a messaging limit that starts at 250 unique recipients.

How does template category affect a drip?

Utility templates must be non-promotional and tied to the user's action or request. Meta can reclassify a utility template that carries an offer as marketing.

Do you need consent for a WhatsApp drip campaign in Singapore?

For marketing drips, generally yes. Service drips, such as a booking confirmation, are treated differently. This is not legal advice, so confirm with a Singapore compliance adviser.

• DNC applies to WhatsApp. PDPC's Do Not Call guidelines cover messages to Singapore numbers on apps such as WhatsApp. A Registry check is valid for 21 days.
• Transaction-only messages are excluded, promotions are not. Add an offer to a confirmation and it may no longer qualify.
• Honour opt-outs. PDPC allows 21 days to give effect to a withdrawal, and WhatsApp's Business Messaging Policy says to respect all opt-out requests.

Malaysian numbers fall under Malaysia's own personal data rules, so have those checked separately.

Which WhatsApp drip campaigns work best for Singapore businesses?

These sequences cover most SME needs. Timings are starting points to test, not benchmarks, and Meta sets the final category.

New lead nurture

For property, education and home services. "Hi [name], thanks for asking about [service]. Details here: [link]."

Booking and appointment reminders

For beauty, clinics and F&B: "Hi [name], your [service] is on [date] at [time]. Reply 1 to confirm or 2 to reschedule."

Abandoned cart and unpaid order

For e-commerce: "Hi [name], your order [number] is waiting. Complete payment here: [link]."

Post-purchase onboarding and review

"Hi [name], here are three care tips for [product]."

Roadshow, showroom and event leads

"Hi [name], thanks for visiting us at [event]. Here is the [offer] we mentioned: [link]."

Win-back for lapsed customers

Opted-in contacts only: "Hi [name], it has been a while. Here is what is new at [business]. Reply STOP to opt out."

Pro tip: Time seasonal drips to sale dates such as 9.9, 11.11, Chinese New Year and Hari Raya, and start the sequence before the broadcast, not after. Our broadcast segmentation guide shows how to turn a broadcast into a drip.

How do you set up a WhatsApp drip campaign?

1. Pick one goal and one trigger.
2. Segment the audience and confirm consent status.
3. Write and submit templates, choosing the category per step.
4. Build the sequence with delays and reply branches.
5. Add exit rules and human handover.
6. Test with internal numbers, inside and outside the 24-hour window.
7. Launch to a small segment, then widen.

How many messages should a drip have, and how do you measure it?

There is no fixed number. Each step must add something new, and the drip stops on a reply or opt-out. Repeating one offer, messaging at night or hiding promotion in a utility template makes a drip feel like spam.

Track delivered, read, replied, converted and opted-out rates for every step. Then add cost per conversion per sequence, because every templated step is billed. Cut or rewrite the step where replies fall away.

How to build a WhatsApp drip campaign in SleekFlow

You can build WhatsApp drip campaign by utilising WhatsApp automation in Flow Builder:

• Time delay node sets a fixed gap in seconds, minutes, hours or days.
• Wait for message reply node pauses with a timeout and a No reply received branch, as in the inactive customers flow template.
• Send message node lets you choose a template outside the 24-hour window.

Analytics shows response times and conversion funnels. For more patterns, see our chat flow templates guide.

How did Cellini use automated follow-ups?

Cellini, a Singapore furniture retailer, struggled to track enquiries across WhatsApp, Facebook and website chat. It built follow-up flows for prospects who had not bought. A QR code in a newspaper ad for a bed bundle enrolled each scanner in a workflow, and post-purchase flows triggered review requests and offers.

• 1,000+ monthly enquiries
• 90% time saved
• More than SG$10,000 generated from one campaign
• Nearly 7,000 customer queries handled automatically in six months