Klaviyo: Email Marketing & SMS
Email marketing, SMS, & WhatsApp that turn messages into sales
Rating
4.5
feedback
2,571
chart
#2,270
All reviews
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Jan. 17, 2025
Klaviyo Inc. regarding unfair and unethical billing practices. For the billing period of December 28, 2024, to January 27, 2025, I was charged $8,180.87, despite being enrolled in a plan clearly outlined at $4,088.50. I have provided Klaviyo with documentation confirming the agreed-upon amount for my plan. Despite this, the company has refused to issue a refund or offer any resolution. Their refusal to rectify this issue is not only disappointing but raises serious concerns about their billing practices and customer support. Additionally, upon further investigation, I have discovered numerous similar complaints from other businesses regarding Klaviyo's unfair and unethical billing. This pattern of behavior suggests systemic issues that need to be addressed to prevent further harm to consumers. I respectfully request that Klaviyo: Issue a full refund of the overcharged amount ($8,180.87 - $4,088.50 = $4,092.37). Conduct a review of their billing processes to ensure transparency and accuracy moving forward.
Thank you for your review. We're looking into your situation, and are connecting internally with our customer success team about this. You'll be hearing directly from us soon!
Jan. 15, 2025
Jan. 8, 2025
If you need service and no one responds its Klaviyo. I have had the worst customer service or no service from this company. When you try to get help there is often no one on the chat and you wait and wait and finally give up after an or hour or two. When they want you to signup they are very fast in responding and you get impressed by how great their service is but after you sign up, no one is there to find you. Stay away as far as you can because after sweet talk, there is no talk.
We're sorry to hear that you're having trouble reaching us. A member of our Support leadership team has reached out to you directly to resolve this.
Jan. 8, 2025
Shocking customer service from the douchebags at Klaviyo. Been with them for 3 years now. Generally all ok. However we've recently reduced the number of contacts/profiles in our email list quite significantly (by around 50,000). We expected this to have a significant effect on our monthly bills, but it seems Klaviyo is still taking out the same monthly amount as they were prior to the reduction in profiles. I've spoken to them via live chat and email today, and was told that Klaviyo does not automatically adjust its billing down if the amount of profiles is reduced. Convenient. They were capable of automatically increasing our bills when our profile list was growing. But apparently they don't do this when the profile lists decrease. Even so I thought that once I'd pointed out that we did reduce our list size last month, and therefore this month's bill should be significantly smaller (by about $550), they would agree to refund me the difference, but they basically told me to check my terms and conditions and get lost. They wont refund me the difference. I am pretty dumbstruck by this. This seems very underhanded to me. Even if it's in the T's and C's to not do the right thing here stinks. Obviously they've now lost all of our business. Update 5th January 2025: after a bit of back and forth with Klaviyo's billing team, and getting nowhere, I decided to leave negative reviews in as many places as I could think. Miraculously 2 days after doing this I had an email from their management offering me the refund they should have given me in the first place. Just goes to show the power of reviews I guess!
Hello, please keep an eye out for an email from a manager on Klaviyo’s Support Team. We’re committed to finding a solution for you as quickly as possible. Thank you for your patience.
Nov. 29, 2024
I would give a 0 if possible. DO NOT SWITCH to klaviyo. We have been in business for 9 years and when we switched to K, our 60% open rate dropped to 20% and all of our emails land in SPAM. All they could say was it was losing consumer confidence and we have to do their "reputation repair" Klaviyo totally screwed us on all big sales. Any one have any idea who else would be a better alternative? Need to get out of klaviyo ASAP
Nov. 22, 2024
Sämta appen jag har varit med om, har gett dom två chanser för jag ville verkligen få detta att fungera men det går bara inte. ingen support, ingen live chat, inget telefonnummer. Du vet inte hur mycket du ska betala tills du får en faktura på tusentals kronor. Hela systemet är gammalt och svårt och avancerat att använda. Jag recommender inte denna överdrivet dyra app med ingen support bakom tyvärr.
Jag beklagar att höra om din negativa upplevelse med appen. Din feedback är värdefull, och vi arbetar på att göra appen mer användarvänlig. Vänligen kontakta oss på [email protected], vi vill gärna lösa de problem du har. Vi kommer att göra vårt bästa för att hjälpa dig.
Oct. 31, 2024
Does not supress marketplace order information like other app at a top level such as Judge Me. Extremely poor customer service and was advised that shopify is responsible for this app. Shopify customer service has advised this is klaviyo's responsibility.
Oct. 19, 2024
This app turned all of my shopify customers into subscribers. Illegal. I have no way to un do the damage done to my customer list that took me 6 months to build.
Oct. 15, 2024
I want to cancel the $15 SMS package but when I do it myself the system cancels everything including my emails even though it is the SMS that I want to cancel. Weronika says that they cannot cancel this service on their side that I no longer want. IT LOOKS LIKE A HOSTAGE TAKING
Using app
Almost 5 years
Total reviews
12
Average rating
3.7
Nov. 20, 2025
Is this fraud?- Klaviyo Secret Sending Limits & Poor Transparency — Be Careful I’ve used Klaviyo for over a year and feel other Shopify merchants deserve a heads-up about something Klaviyo never discloses: Klaviyo will charge you for contacts that it will, without your knowledge or consent, refuse to send your emails to if they deem that contact is unlikely to open/click your email. Klaviyo takes your money then quietly gates or throttles your campaign sends, meaning your emails simply do not reach your subscribers — even though you’re paying full price for that list size. In my case, I had an 8k active list (with 30k suppressed), and Klaviyo still withheld delivery of many campaigns. Open rates were low because emails weren’t actually reaching inboxes, not because of strategy or content. Klaviyo’s dashboard shows “Poor” reputation, but the platform does not explain that this means your send volume will be internally limited. Klaviyo support misdirects you into thinking its all about YOU, the quality of your emails, etc... while not telling you that it's also because they just don't send your emails (their discretion), period. This makes recovery nearly impossible. You’re stuck paying for a list you cannot fully email, with no straightforward path to fix the issue and no warning that this is happening behind the scenes. Klaviyo can be powerful, but this lack of transparency seriously undermines trust. After switching providers, my deliverability improved immediately — confirming the issue wasn’t my content or audience. If you’re a Shopify merchant whose income depends on reliable deliverability, be aware of Klaviyo’s undisclosed internal limiting system. It can cost you months of lost revenue, while you’re still paying for contacts you can’t reach. Someone should really investigate this practice, as it seems like a class action waiting to happen.
Oct. 1, 2024
Klaviyo is such a buggy horrible integration that I'm going to try and get my client to change. I have a sign up form teaser on my client's shopify store that is not part of any sign up form. I've literally turned off every sign up form, every flow, and even disabled Klaviyo from Shopify, and still this Klaviyo teaser is the site. I've contacted support and got the typical copy and paste, go to sign up forms to delete your teaser but there is no live sign up forms, there is no sign up forms that use this teaser, it doesn't exist. Either it was deleted previously and the code still continues to be on the site without any way of removing it and Klaviyo doesn't want to help to fix their broken buggy product.
Sept. 27, 2024
4 days of working to set up a simple landing page with an email capture form and an automated redirect after submission. Experience so far: - form editor is terrible - forms are not responsive across desktop to mobile (and editing for two platforms in the editor is a not usable) - limited logic capabilities moving through form submission flow - forms not saving consistently (it has been random for the past several hours) - forms not saving to designated lists - backend and admin is really unsophisticated and illogical - support (email, free plan) is slow, typically get the ticket closed type of support. In fact, in the past 36 hours, I have twice waited 12+ hours for a response and when the responses finally came I was called Nick and Kate (neither are my name) and the answers were not for me. I had to submit a second ticket to get a response to my first one. I could go one. There is a reason why over 10% of these ratings are 1 star So frustrating because I am now looking for a new solution to what should have been an easy requirement to solve
Sept. 27, 2024
No support after starting to use paid version. We had technical problems and could not activate any features. Support was unresponsive, did not help to solve any issues, not even freezed the subscription until WE solve them.
Sept. 23, 2024
Terrible customer service. Goes in circles. Very unhelpful people answering tell me why things are the way they are. The way they are isn't working...
Thank you for sharing your feedback, and we're sorry to hear about your experience. A member of our support leadership team is reaching out to you directly via the support ticket thread to ensure your concerns are addressed. We value your input and are eager to hear more from you to resolve the issue.
Sept. 12, 2024
Directly after installation, a phone call?? And then an email pressuring for a meeting?? Seriously? That's reason enough to delete the app immediately. I am very surprised by this approach. Please remove my contact details from your distribution list, I do not want to receive any more calls or messages!
Sept. 26, 2024
Has to be THE WORST customer service I have ever encountered. No chat, no phone number, only email, which is promptly ignored. I've been waiting a week for them to respond to an account access issue. Can't do much if I can't access my account. No need to point out the irony of a marketing company that doesn't seem to understand that their customers, the ones that pay for their service, need prompt, helpful support every now and then. An update: It is now three weeks, and Klaviyo has still not bothered to contact me and assist with my issue. Nice try suggesting it is my mail server, this has been checked, the problem lies with this email marketing company that clearly do not care enough about customer service to provide either a chat or a phone number for help.
Hello, I can assure you that our team has been replying to your support requests, and I sincerely apologize that you have not been receiving them. Our responses are sent via our ticketing platform using the alias [email protected], and it is likely that your custom domain has some strict security settings on emails coming through. At this point, only your domain provider or IT team can provide more context around why the email has not reached your inbox. We recommend you contact them for additional details and highly recommend that you add that alias to your safe senders list.
Sept. 2, 2024
Authorised a $140 monthly subscription. Was charged $1240 + $140 at the end of the month. Klaviyo imports and charges for "profiles" that are opted out of marketing. Do not trust this company.
Aug. 25, 2024
Completely unreliable software. Sometimes a campaign sends, sometimes it doesn't. Often have to keep repeating setup until it decides to send.