Klaviyo powers smarter digital relationships. We make it easy for B2C businesses to transform all their data into more valuable customer experiences across every touchpoint — from email and SMS to web and reviews. More than 157,000 businesses rely on Klaviyo to grow their revenue faster and more efficiently.
Klaviyo (klaviyo.com) has 355 customer reviews on Five Star Index, with an average rating of 2.6 out of 5.
Also known as
klaviyo.com
Website
klaviyo.com
Category
Sales & Marketing
Location
Boston, Massachusetts
Listed on Five Star Index
2026
About these reviews
Replies
The company replied to 61% of reviews.
Latest
Most recent review: October 2026.
Edits
Reviews are shown as their authors wrote them. The company can reply, but cannot edit them.
Score
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chat support available 24/7.
chat support is an AI bot which is poorly trained.
Email support available 24/7.
Actually means you can email support 24/7 they will reply during office hours!
The con is real with Klaviyo.
RA
Ray
Worst customer service
Worst customer service, will freeze your account and shut down your campaigns even after 5 years of service, expect the worst, or better, just find another provider. Horrid.
RI
Rae I.
Nightmare
Nightmare. The Worst Company for Email - Cost me thousands of dollars.
After years of my team using Klaviyo, I finally needed help from customer service after my business card got a fraud charge, and I replaced it, but their system suspended me even though we updated it within 2 days of realizing the card was replaced.
I emailed, I chatted, I begged their "product experts", I entered multiple credit cards and they charged me, but my account remained frozen.
After dozens of attempts in 2 days trying to reach customer service, filing requests, begging, I could not get anyone to help and my big campaign couldnt send out to my audience and it cost me thousands.
This company has very limited customer service, and will suspend your account for the slightest issue and it is nearly impossible to get it to work.
Meanwhile, you will still be charged, not able to send emails, and no one wil help you.
Eventually you will have to call your bank and have Klaviyos deductions blocked and get a new email provider. No one from Klaviyo will help you. They have plenty of clients.
Klaviyo is huge, and everyone seems to promote them, but they will cost you and are truly a nightmare if you ever need help with anything.
GR
GreenReview
This platform is horrible
This platform is horrible. IT IS NEAR IMPOSSIBLE TO CANCEL AND CLOSE YOUR ACCOUNT.
JO
John
klaviyo's customer support truly sucks
klaviyo's customer support truly sucks. It takes hours for each request to be responded to. Their sync system can upload stuff, but cannot delete it. Bad design flaws also in terms of the media library. It will make copies upon copies of every deviation of an image, resulting in thousands of images that all appear to be duplicative. Again, no way of deleting images either. Honestly, idiotic designers with very little foresight.
NB
Nadia B.
Sehr enttäuschende Erfahrung mit Klaviyo!
Vor Vertragsabschluss wurde uns umfassende Unterstützung und ein klares Setup zugesichert. Konkret wurde mit uns besprochen, dass ein Parent-Account mit zwei Child-Accounts eingerichtet wird, mit der Möglichkeit später weitere hinzuzufügen. Dies wurde uns von der zuständigen Ansprechpartnerin ausdrücklich zugesichert.
Sobald der Vertrag jedoch unterschrieben war, hat sich der Service abrupt verändert. Auf mehrere E-Mails erhalten wir keinerlei Antwort mehr von den zuständigen Ansprechpartnerinnen. Stattdessen werden wir an den allgemeinen Support verwiesen, wo hauptsächlich eine KI antwortet, die unser Anliegen weder richtig versteht noch lösen kann.
Das Problem: Das zugesicherte Account-Setup wurde nie eingerichtet – obwohl es ein zentraler Punkt unserer Entscheidung für Klaviyo war.
Für eine Plattform in dieser Preisklasse ist ein solcher Umgang mit Kunden absolut enttäuschend. Versprechungen im Verkaufsprozess zu machen und danach nicht mehr erreichbar zu sein, wirkt sehr unprofessionell.
Wir bezahlen ein sehr teures Abonnement und erwarten dafür auch eine entsprechende Betreuung.
Aktuell fühlen wir uns als Kunde komplett alleingelassen. Sollte sich hier nicht schnell eine Lösung finden, werden wir den Vertrag ernsthaft überdenken.
Leider können wir Klaviyo nach dieser Erfahrung derzeit nicht weiterempfehlen.
ZR
Zaido R.
Basically a scam at this point
Basically a scam at this point. They are doomed with the rise of people building theirown solutions.
ML
Mike L.
Signed up with them to use their…
Signed up with them to use their texting campaign feature. Keep on throwing me an error, tried a couple times to work it out with them was not able to get anywhere with them. Finally requested a refund its been 2 plus weeks and not even a response. Would stay away