- Yes, but check your customers' countries first
- The countries where Klaviyo SMS works
- Questions I'd answer before switching it on
- Credits change by destination
- Consent, compliance and age gating
- Automation and AI features for texts
- Other platforms with SMS built in
- My take for online shops
- Frequently asked questions
Yes. Klaviyo supports SMS and MMS alongside email and mobile app marketing, with automated SMS conversations, separate consent for marketing and transactional messages, and a compliance hub. SMS works in the US, Canada, the UK, Australia, much of Europe and Mexico, so check where your recipients are before you plan a campaign.
Yes, but check your customers' countries first
Text messaging is built into the same platform as email and mobile app marketing, so you don't need a separate SMS tool. The real question isn't whether it's there. It's whether it reaches your customers, because it's only available in a set list of countries, and messages can only go to recipients there.
The countries where Klaviyo SMS works
The feature page lists:
- North America: the United States, Canada and Mexico.
- Oceania: Australia and New Zealand.
- UK and Ireland: the United Kingdom and Ireland.
- Europe: France, Germany, the Netherlands, Austria, Spain, Switzerland, Denmark, Finland, Norway, Sweden, Italy, Portugal, Belgium, Poland, Hungary and Luxembourg.
If a big slice of your list lives outside those countries, texts simply won't reach them. Email will, so you'll want to plan your flows with that split in mind.
Questions I'd answer before switching it on
- What share of your buyers live in the listed countries? If it's small, email stays your main channel.
- Have you got permission to text people? Consent for marketing texts is separate, so you'll need to collect it.
- Which message would a customer thank you for? Order and delivery updates are a safer first text than a discount blast.
- Who'll handle replies? Automated keyword replies help, but someone should still read what comes back.
If you can't answer the first two, don't build the flows yet. You'll save yourself a lot of rework.
Credits change by destination
SMS and MMS messages use a different number of credits depending on the recipient's country, according to Klaviyo. A text to one country can use more credits than the same text to another, so if you sell internationally, check the credit use for each market before you plan a big send. The country list and the credit rules are the two things I'd read before anything else.
Consent, compliance and age gating
This is where it's useful for small teams that don't have a compliance person.
- Separate consent. Marketing and transactional consent can be collected separately, so someone can get order updates without agreeing to promotions.
- Compliance Hub. It shows your SMS compliance health and gives guidance on issues.
- Age gating. Alcohol retailers get age gating in supported countries.
Automation and AI features for texts
Automated SMS Conversations answer FAQs and learn customer preferences using keyword replies, which takes the routine questions off your plate and means you aren't answering the same text twenty times a day.
The AI features for SMS include send-time optimisation, channel affinity, sign-up form optimisation and automatic campaign variant testing. Channel affinity's the one I'd look at first if you're not sure whether a customer prefers a text or an email.
For shops with a till as well as a website, Location Hub and Shopify POS data can tie in-store purchases back to SMS campaigns and flows. Multi-channel reporting gives a sale to the last engaged channel, so the same order isn't counted twice across email and text. If you're comparing it more widely, my full Klaviyo review covers the email side too.
Other platforms with SMS built in
Omnisend has an SMS marketing feature with automation for ecommerce.
Want AI doing the heavy lifting in your marketing?
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Brevo lists SMS marketing, WhatsApp campaigns and email in one platform. With either of them, check which countries their texts reach before you commit, exactly as you would here, because coverage is the thing that decides it.
For the wider field, see my guide to SMS marketing software, or this head to head of Klaviyo and Mailchimp.
My take for online shops
If your customers are in the listed countries and you already run email in Klaviyo, switching on SMS is the obvious next step. Start with transactional messages and one abandoned basket text, collect consent separately from day one, and watch the Compliance Hub. If most of your buyers are elsewhere, put your energy into email instead, and revisit texts when the country list grows or your customer base shifts.
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Frequently asked questions
Does Klaviyo support MMS too?
Yes. It mentions SMS and MMS credits by recipient country.
Which countries does Klaviyo SMS cover?
The US, Canada, UK, Australia, New Zealand and many European countries, plus Mexico.
Can I send SMS and email together?
Yes. SMS, email and mobile app marketing sit in one platform.
How does consent work?
Marketing and transactional consent are collected separately.
Does it help with compliance?
It has a Compliance Hub that shows your SMS compliance health.
