SMS that makes money without burning the list
Text messages get read within minutes, which is exactly why they are so easy to ruin. One channel, a hard opt-out, and a list you cannot rebuild cheaply.
SMS is not a shorter email
Most brands launch SMS by pointing their email calendar at a texting app. It works for a month, then opt-out rates climb, deliverability degrades and the channel quietly dies. The reason is structural: email fatigue shows up as people ignoring you, while SMS fatigue shows up as people permanently leaving. You get far fewer sends before a subscriber decides, so every one has to be worth the interruption.
There is also a compliance layer that email simply does not have. In the US, sending to mobile numbers requires a registered 10DLC campaign tied to a verified brand, and carriers filter unregistered or mismatched traffic. Consent rules are stricter and the penalties are real. Getting registration, consent capture and quiet hours right is not paperwork you can skip, it is the thing that determines whether your messages arrive at all.
What the SMS program covers
10DLC and carrier registration
Brand and campaign registration set up correctly so your messages are not filtered before they reach anyone.
Consent and list growth
Compliant capture through pop-ups, checkout and keyword opt-in, built to grow the list without legal exposure.
Automated flows
Cart, checkout, shipping, replenishment and winback flows sized so SMS complements email instead of duplicating it.
Campaign cadence
A send calendar with a defensible frequency, because the right number of texts is much lower than the right number of emails.
Copy that earns the interruption
Short, specific messages with a reason to exist, not a discount code fired into the void every Friday.
Measurement and list health
Revenue per send tracked alongside opt-out rate and deliverability, so growth does not come at the cost of the asset.
How the program gets built
Compliance and registration
Get 10DLC registration, consent language and quiet hours right before a single campaign goes out.
Segment and split from email
Decide what SMS is for versus email, so subscribers are not receiving the same message twice.
Build flows first
Automated flows launch before campaigns, because they carry most of the revenue at a fraction of the send volume.
Add cadence carefully
Campaign frequency increases gradually with opt-out rate watched at every step.
How SMS programs usually fail
The failure modes are predictable and mostly avoidable:
- Sending before 10DLC registration is complete, so carriers filter the traffic silently.
- Mirroring the email calendar, which doubles the message and halves the list.
- Discount-only messaging, which trains subscribers to ignore anything at full price.
- Ignoring quiet hours and time zones, which turns a promotion into a complaint.
- Measuring revenue per send while ignoring the opt-out rate that is destroying the asset.
Common questions
What is 10DLC and do we actually need it?
It is the registration framework US carriers require for business messaging from standard ten-digit numbers. You register your brand and your campaign use case, and carriers use that to decide whether to deliver your traffic. Unregistered sending gets heavily filtered, so yes, it is required in practice.
How often should we text our list?
Far less often than you email it. The right cadence depends on your category and purchase cycle, and the honest way to find it is to start conservative and increase while watching opt-out rate. Anyone quoting a universal number is guessing.
Do we need a separate platform from our email tool?
Usually not. Klaviyo handles both, and keeping them in one place makes suppression and cross-channel logic much easier. A separate SMS platform mainly makes sense if you have unusual requirements it cannot meet.
Can SMS work for high-consideration or expensive products?
Yes, but the role changes. For considered purchases SMS is better as a service and reminder channel, such as back in stock, shipping and appointment style messages, than as a promotional one.
Let us build SMS properly
Tell me what you sell and what your current email program looks like. I will tell you where SMS actually adds revenue rather than noise.
30 minutes · No obligation · I come prepared
