Should I use SMS as well as email?
SMS can work alongside email for time-sensitive messages, but it needs explicit consent and should be used sparingly. Email remains the base for most stores.
Treat SMS as a complement for things like back-in-stock alerts and delivery updates, not a replacement.
Check consent and local rules before collecting numbers, and keep messages short and relevant.
Start with one small, clearly useful SMS use case and a separate consent step, then review opt-out rates before adding more message types.
In practice.
A store uses SMS only for back-in-stock alerts and delivery updates to people who opted in. Everything else stays in email, so it avoids over-messaging and stays within consent rules.
Want this handled for your store? See our klaviyo email marketing service or book a free audit.
Guides that go deeper.
Find out what your list is actually worth.
We review your flows, list health, authentication records and last ninety days of performance, then send back what we found.
30 minutes, no obligation, and the findings are yours to keep either way.