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
This company cannot pay to remove reviews or change its score.
Support doesn't help with getting access back to the account. I have 2fa for more than 15 accounts in different softwares, only in klaviyo it doesn't work. I reached out to support 3 times and they told me my phone is wrong, if my phone is wrong how come other codes are working for other softwares.
Response from KlaviyoMar 16, 2023
Hi Nick, thank you for sharing your feedback - that sounds frustrating! I've requested your details so I can look into this matter for you. Kind regards, Claire
AO
Aleksandr O.
MALWARE/PHISHING DISTRIBUTOR
This company allows spammers to abuse their service to send MALWARE and PHISHING SPAM.
There is no way to report abuse. There is no abuse department.
Their form for security vulnerabilities doesn't function.
This company is complicit in sending malware and phishing because it offers no way to report abuses of their service. In fact, I would go on to say that this is their precise business model, to cater to spammers, scammers, and hackers.
Edit:
In reply I was directed to email Klaviyo. I emailed them and they never replied. Then they attempted to get my review removed by demanding personal details such as my name, phone number, and some sort of reference number. I have no business relationship with this company but they insist on sending me MALWARE AND PHISHING SPAM and do not allow a way to report it. They do not reply to numerous contacts I have made toward them. This company is a joke and completely disorganized. Their website is not complete and their claims are falsehoods and lies.
Response from KlaviyoFeb 24, 2023
Hi Aleksandr, thank you for your review. Klaviyo has robust anti-abuse and campaign monitoring measures in place to prevent our platform being used for non-compliant email activity. We will disable any account that is found to be abusing the Klaviyo platform. Please drop me a line at [email protected] with your specific concerns and our compliance team will investigate. Kind regards, Claire
DP
Davina P.
Blocked my account right before…
Blocked my account right before Christmas. Asked them to retry my payment method and heard nothing back for 3+ days. Now I can't send any marketing over the xmas/boxing day sales. Thanks A Lot!
Response from KlaviyoDec 27, 2022
Hi Davina, it looks as though your account was stopped due to payment being 60 days overdue. If this was unintentional, I'm sure we can fix it. Please look out for an email from me. Kind regards, Claire
AS
Ashley
Horrific experience!
Horrific experience!
This is a scam website. I signed up for a 30 day 1 month email subscription. 2nd month on they are still charging me from a card I didnt authorise (its not saved anywhere in the system) and I gave no authority to charge it months later. I paid for 1 month only and thats all. When I contacted support and spoke to Katherine and Joe, they both lied and said I should have cancelled my subscription! When you go on Klaviyo site, there is nowhere to cancel a subscription and downgrade the plan. They purposely don't give you that option so they can charge your card month to month and there is no way to put a stop to it. They simply tell you to cancel a plan that doesnt exist, you can only close your account not downgrade to free plan (they dont want you to do that as they wouldn't be able to charge you then) When requesting a refund the answer was no. This company is a scam and fraudulent. If you want a professional and transparent service - dont look at Klaviyo. I am now filing a chargeback with my bank to get my money back and then filing a court case to bring them to justice and stop them for scamming any more small businesses.
Response from KlaviyoDec 20, 2022
Hi Ashley, thank you for taking the time to write a review. I'm sorry to hear about the frustrations you've described. This doesn't sound right at all so I'd like to look into this matter and have requested your details. Kind regards, Claire
MA
Matt
Expect your quoted costs to rocket...
After a long period using Mailchimp, we decided to move to Klaviyo to obtain the benefits of improved automation workflows and abandonment emails. We went through a sales process in which we were asked how big our Mailchimp lists were and how many emails we sent, and from which a quote was provided. We were sold the ability to get 35-40% of our revenue from Klaviyo.
After migrating, we went through a 4-6 week onboarding process in which we set up the various features. Functionality is good and the platform itself is excellent. However, we then discovered a key difference between Mailchimp and Klaviyo. While Mailchimp lets you send abandonment emails to non-subscribers with no charge, Klaviyo charges for so-called "unsuppressed" profiles. This hugely increased the cost.
This issue was not made clear during the sales process, yet when we complained we heard it was a common objection. Apparently, customers who face the issue either pay the extra to upgrade or suppress all non-list members, thereby reducing performance. What's more, Klaviyo seems to make deliberately difficult to suppress users, offers little support in doing so (aside from suppress them all or leave them all in), so you need to expect your original quote to go up a lot.
The platform itself is good, but I found our sales person pushy, not transparent over future costs, and not very responsive to resolving the issue. It soured what would otherwise have been a solid move.
Response from KlaviyoNov 25, 2022
Hi Matt, thank you for taking the time to write a review. I'm sorry to hear about the frustrations you've described. I would like to look into this matter to see what we can learn from it, so I've requested your details. Kind regards, Claire
JG
Justin G.
Low quality platform with horrible bags…
Low quality platform with horrible bags and support. Would not recommend it if it would be free, forget about paid services.
Response from KlaviyoNov 21, 2022
Hi Justin, thank you for writing a review. I'm sorry to hear that you're unhappy with the service. I'd like to look into this matter further so I have requested your details. Kind regards, Claire
JF
Just F.
So far this has not been a good…
So far this has not been a good experience, onboarding and our contact have been very poor. Last week as a business we spent nearly 15hrs either on livechat or trying to contact someone which was an absolute waste of time and advise given was not adequate. Just Fabrics
Response from KlaviyoJul 18, 2022
Hi there, thank you for taking the time to write a review about your experience. I'm sorry to hear about the frustrations you've described - please look out for an email from me. Kind regards, Claire
AF
Andrew F.
An expensive service which cannot be cancelled
An expensive service. when i try to cancel the links do not work - beware before you sign up.
Response from KlaviyoJul 4, 2022
Hi Andrew, thank you for your feedback, which I've shared with the team. Please look out for an email from me - I'd like to find out which links are broken. Kind regards, Claire