Klaviyo: Email Marketing & SMS , 1,972 reviews

This is less than 1 star I will never use it again
I have been designing my campaign the whole day then it sent an empty template to all my customers!!

**September 2023** Customer service became so slow AND NOT wiling to deep-dive to help, just to close tickets**
I have realized I lost thousands euros, thousands!! In people not being able to go properly into the welcome flow. I have raised concerns, but support answered there were no issue. I decided to try by myself with a new mail address and I haven't received the welcome mail! I was right, and I had to be extremely pissed towards the support so that they decided to escalade the issue internally, explaining that indeed there was an issue, but the pain is here, thousands euros lost in welcome flow. My business is at risk, terrible.

I would highly recommend using another app. This one is horrible, I got this set up luckily under the free plan and I went to use a test email that I sent to myself and my account was disabled. I reached out to customer service to find out why and got some robotic answer.
The only thing I can think of is the fact I sent out two TEST emails to myself, which I still have yet to receive, and got disabled. What bothers me most about that is in the statement they sent me about anti-abuse is. They stated "You may receive performance alerts and warnings from us", I never received any notice, when I asked the customer service rep, if you can even call it customer service, I still have not gotten a response from 12 hours ago. I will be deleting from my store and using another app.

Disabled my account for no reason, then sent me a questionnaire of over 20 questions about the business in order to grant access to me again. I've waited over a day to resolve this issue and wasted many hours with the customer service.

Very bad, almost lost customer service. When we have a problem, it is difficult to get any help. And for live chat, wait for long and long time, waste my time! And it is expensive, very expensive!

Based on our experience, be very careful with Klaviyo billing. Even if you turn plan auto-upgrade OFF, Klaviyo turns ON the auto upgrade in their billing forms if you upgrade via a campaign. With this, Klaviyo will over-ride your selected plan choice, up-charging you 100% more than you agreed or needed in our case. Plus Klaviyo says they have specific policy that they do not provide refunds when you fall into their auto-upgrade bucket. So be careful to look for auto-checked boxes as we found in our experience can double your cost with no benefit and absolutely no refunds.

I have been using this app for long and now I am not able to pay them, to upgrade my plan, we are losing important dates. Emailed them several times with no response.

If I could give zero starts, I would. It's an amazing app, but they want to control your email domain and the way you email your clients. Not very versatile. They steel your money very easily with their automatic upgrades as well.

wat of money i suggest not use this app

Installing this app was the root of all disasters, basically no service, brought my website down, lost thousands of dollars in ad dollars, my website was grayed out and stuck, couldn't click on any pages, the fees were extremely expensive, When you increase email activities, he doesn't even have any reminder to increase the fee, and directly upgrades your fee in the bill. Rogue behavior, opaque charges, stay away from klaviyo, is away from disaster.