Name: Klaviyo
Rating: 4.7 (137 reviews)

Overview

Product Information on Klaviyo

Updated 28th October 2025

What is Klaviyo?

Klaviyo is the AI-first B2C CRM that unifies marketing, service, analytics, and data in one platform. The Klaviyo Data Platform keeps a single customer profile in sync across web, email, SMS, WhatsApp, mobile, and social. Teams automate workflows, segment easily, and deliver consistent, relevant experiences without extra tools or complex setup. Built-in K:AI agents plan and launch campaigns, personalize every send, answer questions, and resolve issues—so you grow faster while keeping operations simple and relationships strong.

Overall experience with Klaviyo

Marketing Manager

<50M USD, Retail

FAVORABLE

“Highly Customisable Flows and Segments Contrast With AI Feature Limitations”

4.0

May 11, 2026

Klaviyo's email marketing platform is a staple in our everyday revenue generation. It has been pivotal in helping us scale in performant regions and to also break into new regions. The CSM team is always exceptional; consistently responsive and knowledgeable. The only issues I have are with new product releases being somewhat underperforming or not quite up to a high functioning standard.

Director of Marketing

50M - 250M USD, Consumer Goods

CRITICAL

“Klaviyo Offers Shopify Integration But Customization Proves Challenging Beyond Basics”

3.0

Jun 16, 2025

Klaviyo is a great tool specifically for those that are on Shopify.

About Company

Company Description

Company Details

Company type

Public

Year Founded

2012

Head office location

Boston, United States

Number of employees

1001 - 5000

Annual Revenue

1B-3B USD

Website

https://www.klaviyo.com/

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Key Insights

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User Sentiment About Klaviyo

Reviewer Insights for: Klaviyo

Deciding Factors: Klaviyo Vs. Market Average

Performance of Klaviyo Across Market Features

Klaviyo Likes & Dislikes

Email flows - these are super easy to create and optimise. They are highly customisable and can be triggered from custom events so they can be super specific to our business needs. Audience segmentation - I like that I can build out hyper-specific audience segments for campaigns, or target wider audiences when needed. I also like that I can integrate these audiences with other platforms to make my marketing outputs more wholistic. Email campaign builder - this has evolved to be even easier to use and more customisable, I appreciate that my team can jump in with ease to build or edit templates. I also appreciate the ability to clone between accounts which saves incredible amounts of time.

There are a lot of built in, out of the box, solutions for Shopify that make it an amazing time/performance saver.

Ease of use - the campaign, segmentation and flow builders are incredibly intuitive and user friendly. Additionally, the customer support we receive is incredible - whether one-off support requests for bugs or glitches, to long-term strategic partnerships, I have been so impressed by the level of attention and care we receive despite being just one of hundreds of thousands of Klaviyo customers. Aligned to that - I genuinely feel heard by Klaviyo. There have been many instances where I have flagged a drawback to a tool or a nice-to-have addition, only to find out a few months later that they took the time to adsress and solve it.

How manual the scheduling system still is - I have to switch accounts per campaign, it would be better if I could select accounts to schedule the campaign for and have the links preset for each region to automatically change. Glitches when cloning campaigns across accounts - sometimes it doesn't work so I need to fallback to cloning campaigns, but then my send times and subject and preview lines are not cloned. The AI functionality in the campaign editor is pretty rudimentary, if it could reiterate content to feature different products it would be a game changer.

Once you move past its built-in support for Shopify, it can be challenging to implement anything custom.

The tradeoff for all of the above mentioned accessibility is depth. Klaviyo's tools lack some of the more advanced capabilities that I need to get my job done, so I am still occasionally reliant on outside support and vendors. Additionally, the level of quality of their various AI tools falls across a massive range. Some of the AI tools, like predictive analytics, are pretty remarkable and have been a game changer for us. However, others, like their GenAI offerings, are almost unusable.

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Recommended Gartner Insights

Market Guide for Email Marketing (Transitioning to Email Marketing Platforms)

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<50M USD

Retail

Review Source

Highly Customisable Flows and Segments Contrast With AI Feature Limitations

May 10, 2026

50M-1B USD

Consumer Goods

User-Friendly Tool And Strong Customer Support But Some Advanced Features And AI Tools Remain Lacking

May 8, 2026

Klaviyo is an incredibly accessible email tool that serves veteran marketers and first-timers alike. With a user-friendly interface, robust documentation and best-in-class hands-on support, anyone can feel confident in their ability to create and deploy email campaigns.

Vp, Software Development

Insurance (except health)

Klaviyo offers best-in-class email marketing functionality but with a steeper learning curve

5.0

Apr 13, 2026

Klaviyo is a fantastic tool for any type of email marketing. We use Klaviyo in a very customized, developer-heavy way to match our enterprise, and it does the job well. From small, simpler e-commerce integrations to full custom builds, Klaviyo is setup to handle it all.

The ideal solution for global B2C brands

May 13, 2026

We adopted Klaviyo in 2020 for email due to the ease of integration across Shopify and our wider tech stack. We have been early adopters of new features and consistently impressed with the product roadmap. Being able to build out campaigns and flows across our 7 accounts has never been easier and the opportunity for deeper segmentation and personalisation continues to improve and allow us to drive revenue growth.

Balancing Approachability and Advanced Features in Klaviyo for Marketers

Apr 28, 2026

With 12+ years in email marketing and CRM, I can confidently say that Klaviyo is the most intuitive platform I've used (and I've used a few!). The workflow is remarkably easy to follow without sacrificing the depth that marketers need.