A seven-email onboarding sequence over two weeks is unremarkable. The same sequence on WhatsApp is seven notifications on someone's personal phone, and it will cost you a meaningful share of the list.
Shorter, and further apart
Translate roughly: where you would send five emails, send two messages. Where you would space them two days apart, space them five. The channel is more intrusive, so the same content at the same cadence is experienced as considerably more pressure.
A useful discipline is to require each message to justify its own existence: what will the recipient do differently because of this one? If the answer is "reinforce the brand", delete it.
A welcome sequence that works
- Immediately: confirm what they signed up for, set expectations for frequency, and give the opt-out. One message.
- Day 3: one genuinely useful thing — a guide, a how-to, an answer to the question new customers always ask. No selling.
- Day 7: the offer or the ask, now that you have given something first.
Three messages over a week. Businesses that run twelve over a month consistently see block rates that make the whole programme uneconomic.
Set the frequency expectation in message one
"We will send about two messages a month" does two things: it reduces blocks from people expecting silence, and it commits you. Then keep to it — exceeding a stated frequency is worse than never having stated one.
React to behaviour, do not just count days
A time-based sequence that ignores what the person does is the main source of embarrassing messages: the "still thinking about it?" that arrives after they bought, or the onboarding tip for a feature they already use.
- Exit the sequence on conversion, immediately.
- Exit or branch if they reply — a reply means a conversation, and continuing to drip over it is rude.
- Skip messages whose content no longer applies.
- Pause the whole sequence if they open a support conversation.
Every message is Marketing
Nurture sequences are Marketing templates and need marketing consent. Do not put them on transactional consent because the messages feel helpful — helpfulness is not the test, promotional intent is.
Design for replies
The advantage WhatsApp has over email is that replying is trivial. Ask a real question that someone can answer in three words, and the ones who do become conversations rather than campaign recipients — which converts far better and opens a free window.
"What are you mainly looking for — running or everyday?" outperforms "Browse our new collection" by a wide margin, and it also tells you something you can use.
Watch the cumulative opt-out
Track opt-outs and blocks per message position in the sequence, not just per campaign. There is usually one message where losses spike — most often the third or fourth, where the cumulative sense of frequency crosses a threshold. Removing that single message often improves the whole sequence more than rewriting the rest.