More channels, more ways to lose the customer
Email, push, WhatsApp, SMS, in-app. Each one looks like a new opportunity. Each one is also a new way to wear someone out. When the lifecycle team, the promo team, and the product team all have their own channel and their own calendar, the customer doesn’t experience five thoughtful programs. They experience noise.
And noise has a price. People mute push. They tap unsubscribe. They mark you as spam — which quietly drags down your deliverability for everyone, including the messages that actually mattered. The damage isn’t one bad send; it’s the slow erosion of permission. Once someone has tuned you out, the cheapest, highest-margin channel you own is gone, and no clever subject line buys it back.
One brain, not five megaphones
The fix isn’t fewer channels. It’s a central layer that sits above all of them and answers one question before anything goes out: given everything else this person is about to receive, should this message send at all? Frequency caps, quiet hours, priority rules, dedup across channels — boring plumbing that almost nobody builds, and the single biggest lever on long-term engagement.
Treat the contact strategy as a shared, scarce budget. Each team isn’t entitled to a send; they’re bidding for the customer’s limited attention. The orchestration layer decides who wins. That reframing does more for retention than any individual campaign, because it stops your own teams from competing to exhaust the same person.
Each team isn’t entitled to a send. They’re bidding for the customer’s limited attention.
Next-best-action over channel silos
Once one brain owns the decision, the question stops being «what should the email team send this week» and becomes «what is the single most valuable thing to say to this person right now, and where will it land best». That’s next-best-action: a ranked decision across all candidate messages and all channels, not a stack of independent calendars that happen to hit the same inbox.
Done well, most of what your teams want to send simply loses the auction — and that’s the point. The customer gets the one message that earns its place. Your teams get a system that protects them from each other.
Use the cheap channel, earn the expensive one
Channel choice is an economic decision, not a preference. Start with the cheapest channel that can do the job, and reserve the expensive, intimate ones for moments that genuinely deserve them. WhatsApp is the clearest example I’ve measured: in a UK pilot it returned over 80× the ROI of email — a conservative floor. But that number only holds because we didn’t burn it on routine traffic. The expensive channel stays valuable precisely because you don’t abuse it.
That’s the whole discipline in one line. Spend on the cheap channel. Earn the right to use the expensive one. Let a next-best-action layer enforce the difference, so the customer hears from you when it matters — and trusts you the rest of the time.