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Customer reviews: Klaviyo: Email Marketing & SMS

Develop by Shopify

Klaviyo is a powerful email marketing app designed to help Shopify store owners automate campaigns, segment audiences, and drive sales. This review covers its features, pricing, and real user experiences to help you decide if it’s the right fit for your business.

Reviews (2,576)

Overall rating
4.6

What Merchants Think

The app "Klaviyo: Email Marketing & SMS" receives generally positive feedback from merchants who appreciate its robust features, ease of use, and significant impact on business revenue. Many users report increased sales and customer engagement as key benefits. However, recent changes in pricing policies have caused dissatisfaction among some long-term users.

Key Strengths

  • Intuitive user interface and ease of use
  • Powerful automation and segmentation tools
  • Comprehensive analytics and insights
  • Rich integration with platforms like Shopify
  • Responsive customer service and support
  • Educational resources including tutorials and webinars

Common Concerns

  • Price increases and changes in pricing model
  • Billing issues and perceived inflexibility
  • Limited support for users on the free plan
  • Complexity in feature setup for new users
  • Problems with customer service response times

Final Thoughts

Klaviyo remains a compelling option for businesses looking to enhance their email and SMS marketing strategies, thanks to its dynamic tools and positive impact on sales performance. While most users appreciate its features and support, concerns over recent pricing adjustments might drive some to seek alternative solutions. Overall, Klaviyo is highly recommended for merchants committed to leveraging email marketing for growth.

Crochetree

Jan 14, 2026  on Shopify

Great app to work with, with endless possibilities for segmentation and flow development. Also customer service is amazing, they are fast and always there to help us out whenever we need. Highly recommend it.

Vermont Nut Free Chocolates

Jan 09, 2026  on Shopify

Disappointed in my experience with Klaviyo so far. The templates are quite poorly designed. Even the most basic templates, like for order confirmations, contain a lot of errors. I have been in constant contact with support trying to get them to include basic information that should be included automatically. For example, dynamic products were not being pulled in at all, so customers were not able to see what they purchased. This was simply an error with their template. Once we had that resolved, there was still a lot of missing information (like product variant flavors, apartment address lines, etc.) Little things that you may not notice while building, until customers complain. It took 3 support cases to get an order confirmation that simply has the correct products listed and the customers full shipping address... You cannot trust your onboarding specialist to check your emails or flows either. I had mine check our order confirmation flow multiple times before going live. She assured me we were all set and we set the flows to LIVE, and it simply did not work! She missed a key trigger that was keeping the emails from sending. We did not discover this until customers complained about missing confirmations. Again, so disappointed in the quality of the templates and the support i've been provided. While Klaviyo has all the latest and greatest features, some of the most simple and important things are severely lacking! I've used free email builders that have better designed templates.

SGCCOSMOTECH

Jan 09, 2026  on Shopify

I’ve really enjoyed using Klaviyo for email/SMS marketing. It’s flexible, easy to work with, and makes it simple to build targeted flows based on real customer behavior. The reporting and deliverability tools are solid, and the support team has been responsive and helpful whenever I’ve needed assistance. Overall, it’s a reliable platform that scales well as your business grows.

528 Innovations

Jan 07, 2026  on Shopify

We are unsatisfied by the set up and ease of use of the Kaviyo SMS app. We have been locked out of our account and cannot access the app or are unaware of our status and customer service has not responded to requests to unlock account. Rating Poor, unresponsive, challenging to use.

French Lady

Jan 03, 2026  on Shopify

I’m really unhappy with this app so far. Expecting users to pay for basic human assistance is unacceptable and leaves a very poor impression.

SelfGem

Dec 30, 2025  on Shopify

Atrocious customer service that has no basic knowledge. They don't even know what z-index means. Also, the smart translate feature is completely buggy. It translates some parts and leaves out others. Even mixes languages within 1 email. Ive been using Klaviyo now for 2 months and was better off with Omnisend. It was also cheaper with basically the same functions. What a waste.

Southshore Adornments

Dec 16, 2025  on Shopify

Terrible app, we used to use it for sign ups, haven't used it since 2021, when after i deleted the app, thousands of fake emails got added to the list. I've been trying for hours to delete ALL customer's data, as well as all these bot email accounts with no success, can't even get support for it and refuse to pay to get it. the profile maintenance page is blank. just trying to comply with the LAW on customers data

AlphaMarketplace

Dec 15, 2025  on Shopify

I have paid for a plan and in the same date they have created me an invoice and i have told them that the invoice is incorrect and it needs to be changed, they said that the past invoice cant be changed, only the future ones if i modify in the settings the company name, etc. But i have requsted this in the same date when they have created my invoice, i dont understand why it cant be modify, its unbaliveble how they cant change the invoice.

Pure Peony

Dec 10, 2025  on Shopify

Super easy to use and fantastic return on investment. Able to segment customers any which way we want so we can keep our customer engagement personal and relevant. Easy to set up and track impact of campaigns and flows.

Nisolo

Dec 02, 2025  on Shopify

I've been using Klaviyo for the last 5 years or so at various brands and what I always say to people considering the platform is that the level of support offered by the Klaviyo team is next level. I've pretty much had to learn what I know by teaching myself from articles from the help center or hopping on a live chat with an agent and they are always so wonderful and willing to help troubleshoot problems or sanity check logic when building flows, segments, etc. if they can't help you in the moment, they are always so thorough and on it with the follow ups. They're the best!

The Squad Bots

Nov 30, 2025  on Shopify

Unbelievably non intuitive. Wouldn't text me for previewing the SMS email. Also, the form just simply wouldn't go onto my website. It didn't show up for me, would show up randomly for others, and the preview, and the final design on the website were completely different

BINS AND BOXES

Nov 27, 2025  on Shopify

So many restrictions on the new klaviyo customer hub. I can integrate gorgias, but not their live chat. Now klaviyo expects me to pay for the helpdesk feature AND also gorgias? Why? Also no mobile app for the helpdesk.

Ohdita

Nov 26, 2025  on Shopify

Be careful when using their email templates. They add default ALT text of the original image and include a link from some other company within some templates with animated pictures. Unfortunately, I realized this only after sending an email to my customer list, and now my customers received an email where the main clickable image leads to a completely different website. Those ALT texts and links shouldn’t be added to the templates. The services of your partner should be advertised in a different way not in a hidden way within templates!

Import A Toy

Nov 19, 2025  on Shopify

Hectic experience. They hound you until you sign up but then dont respond after you sign up and make the payment. Been dealing with their sales person Sulaiman Lodhi and its our worse experience with an email app to date.

Mixology

Nov 19, 2025  on Shopify

Klaviyo has been awesome for Mixology. It’s super easy to use, the segmentation is spot-on, and it’s helped us send way more personalized emails. We’ve seen better engagement, better conversions, and it just fits right into our workflow. The analytics are clear, the automations are powerful, and it’s made our marketing feel way more organized. Highly recommend!

IKULLS

Nov 18, 2025  on Shopify

KLAVIYO SON ESTAFADORES, ROBAN DINERO, INFLAN PLANES QUE NUNCA UTILIZAS, HABLAS CON ELLOS, LO ACEPTAN SIN DISCULPAS Y NO DEVUELVEN DINERO. FATAL EMPRESA.

SYFA Shop

Nov 12, 2025  on Shopify

Their customer support team is great! You can get through to them by Live Chat pretty much instantly. Their CS/product teams are knowledgeable and spend time helping you through issues and queries. They've helped me out a lot in the past year!

iGulu

Nov 12, 2025  on Shopify

LOVE, my favorite email marketing program. They're the best and are constantly improving and optimizing.

Hendiya®

Nov 06, 2025  on Shopify

Facturation abusive, j'ai installé l'appli et payé un frais mensuel de 400$, je l'ai essayé 4 jours seulement avant de tout desactivé, et veillé à la desinstaller avant le nouveau cycle de facturation. Ils m'ont quand même redébité 400$. Je suis choquée!!

Rêve

Oct 31, 2025  on Shopify

After subscribing and making payment, I was unable to access my account for two full days. Despite multiple attempts to reach out, their support team offered absolutely no effective solution. Extremely disappointing experience.

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