Great ! Great tool, which allows you to optimize your business easily. A very personalized step-by-step follow-up allowed us to take control of this complete and easy-to-use tool. Quick results. Very efficient support that answered all our questions in record time, we recommend to all types of businesses! We also had a lovely time from beginning to end with Toby, Sophie and Marius who were all amazing. Thank you!

Make them stop I'm not a customer, but someone decided to use their services to sign my email address up to receive hundreds of marketing emails. You can't contact their customer service unless you're a customer, so here I am. *UPDATE* A member of the Klaviyo team reached out to me and removed my email address from their customers' lists. A rare example of excellent customer service, and I'm grateful for it. Well done, Klaviyo!

I got promised X by the sales… I got promised X by the sales representative. When I reached out to customer support after setting up an account, they told me this was not possible. I tried reaching out to the sales representative, didn't hear back from her. Tried reaching out to support again, didn't hear back from them either, but did get an email my ticket got closed. Worst customer service I've ever experienced.

Shady business practice and terrible customer service The worst customer service I have ever experienced. The are quite literally holding money to ransom and their customer services team are robots which simply quote their nonsensical policies. Shady business practice, stay well clear. I paid an invoice in advance for 1 month of email flows ($100 which is criminal itself) and they did not activate my account. They are now claiming that they will hold onto this money indefinitely until we agree on a separate dispute which is much less - which they did not even bring up until they took my money. So they are in essence holding my money to ransom for a completely separate matter and refusing to provide services until in their mind it’s settled. The separate issue being that they want me to pay a month of services which I cancelled and didn’t use. Customer service is appalling, I was speaking to someone that called themselves “Ninja” (what do you expect….) and has zero sense of being reasonable. Update: Quite comical they have responded but made no comment on the fact they are still holding onto a payment I made for a service which they are not fulfilling. It’s like a company saying you owe them £5 which you disagree with, and paying them £100 for another service - they then hold onto the £100 without giving you the latter service until you pay back £5 separately. Unbelievably stupid.

Nonsensically expensive Look, if you're constantly sending emails, Klaviyo might be worth it. But for most anyone who doesn't need the full suite, you'll be throwing money away. I certainly have! There are better options out there with more customer-friendly billing practices and at much more competitive price point. Customer support are world champions in corporate BS-lingo.