Klaviyo: Email Marketing & SMS

We've been using Klaviyo for a long time and have continued to stay with the platform because of its rich feature set, ease of use, and flexibility. More importantly, it consistently delivers a strong return on investment, making it a valuable part of our marketing strategy.

Everything just works - from popup to purchase
We run a premium dog care store in Bulgaria and Klaviyo has become the backbone of our email marketing. The Shopify integration synced our subscribers, orders and events flawlessly, in both directions. We built a welcome flow with a discount code, an abandoned checkout flow and a signup popup, all connected to the store data without a single technical issue.
What impressed us most: the level of control. Smart targeting rules for forms (scroll depth, exit intent, excluding existing subscribers and checkout pages), per-message Smart Sending settings, and clean sync settings that just make sense. Support for a non-English store (Bulgarian forms, emails and error messages) worked perfectly too.
If you are serious about turning store visitors into repeat customers, this is the tool. Five stars, well earned.

Great experience! The setup was straightforward, and I was able to connect my custom domain and create a professional business email for my Shopify store. Everything worked as expected, and the interface was easy to follow. Having a branded email address gives my store a much more professional appearance. Highly recommended for Shopify store owners who want a reliable custom email solution.

Klaviyo has been really easy to use for my store. The automations make a huge difference—especially the abandoned cart flow, which helps bring customers back without me doing anything. It’s a true set‑and‑forget system that saves me time so I can focus on other parts of the business.

Klaviyo when used properly is a game changer - just make sure that you are sending emails that people actually want to open - dont only use email marketing to promore sales and specials.

Running a small brand on my own, I needed an email tool that wouldn't slow me down, and Klaviyo has been exactly that. It's incredibly intuitive. I set up a welcome flow, a signup popup, and an abandoned cart sequence without needing any tutorials, just by clicking around. The interface is clean and friendly, and everything sits where you'd expect it to. So far I'm genuinely happy with it and can already see it helping the store.

Update*

After our feedback, Klaviyo team reached out to us and solved our problem. Hope they solve this problem for everyone. Thank you Klaviyo team.

If giving this app 0 stars were possible, we would seriously consider it.

Seems like entire system built to rip you off.

We paused our use of Klaviyo for a while. When we returned, our paid plan had been deactivated, which was understandable. However, we then encountered a billing loop that made it impossible to clean up our account without first paying for profiles we do not intend to use.

Here is the issue:

1. Without an active plan, we cannot suppress profiles manually, in bulk, or through the API.
2. We also cannot reactivate the account on the free plan because the number of active profiles exceeds the free-tier limit.
3. The only option presented is to purchase a paid plan covering the entire existing profile count first, even though the purpose of reactivating the account is to suppress inactive profiles and reduce that count.
4. If we pay for the oversized plan, suppress the profiles, and then downgrade, the initial payment is not refunded or credited toward future invoices.
5. We also tested bulk suppression through the API. The API accepted the request and marked the job as complete, but all profiles were skipped:

* Total count: 100
* Completed count: 0
* Skipped count: 100

6. We found similar reports in Klaviyo’s community forums, but we could not find a practical self-service solution.
7. Access to customer support is also restricted without an active paid plan, which makes resolving the issue even more difficult.

This creates a frustrating circular problem: we cannot suppress profiles without reactivating the account, and we cannot reactivate the account without first paying for profiles we specifically want to suppress.

Requiring customers to pay for an oversized plan before allowing them to remove inactive profiles feels unfair and unnecessarily restrictive. Businesses should not have to pay a substantial fee simply to regain access to basic account-cleanup tools.

Klaviyo has been a very helpful platform for managing our email marketing and customer engagement. The segmentation, automation flows, and reporting tools make it much easier to understand customer behavior and improve campaign performance.

What impressed me most is the quality of the customer service. The support team is professional, responsive, and always willing to provide clear guidance when we have questions. Their help makes the platform much easier to use, especially when optimizing flows, troubleshooting issues, or improving campaign strategy.

Overall, Klaviyo is a powerful and reliable tool, and the excellent customer support makes the experience even better. Highly recommended for businesses that want to build stronger customer relationships through email marketing.

Klaviyo makes it so easy to set up and send campaigns. I know I am not even using all of the features that I should be and it has added "easy" additional revenue to my business.

Klaviyo has been an amazing product for us in building our business! The integration with Shopify has been fantastic. We have seen good growth, and as we learn how to build better flows and email campaigns, we are very excited for the future of our Gel-out business.