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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Klaviyo

    Score8.3 out of 10
    N/AKlaviyo is a marketing automation platform that helps businesses to centralize and use every piece of their customer data. With Klaviyo, businesses can combine customer data with more than 350 native integrations to automate personalized email and SMS communications that make customers feel seen. From mom-and-pop shops to established companies, Klaviyo states businesses like Dermalogica, Living Proof, Solo Stove, Citizen Watches, and more than 143,000 other paying users leverage their platform…

    $20

    per month

    Optimizely Web Experimentation

    Score8.7 out of 10
    N/AWhether launching a first test or scaling a sophisticated experimentation program, Optimizely Web Experimentation aims to deliver the insights needed to craft high-performing digital experiences that drive engagement, increase conversions, and accelerate growth.N/A
    Pricing
    KlaviyoOptimizely Web Experimentation
    Editions & Modules
    No answers on this topic
    No answers on this topic
    Offerings
    Pricing Offerings
    KlaviyoOptimizely Web Experimentation
    Free Trial
    YesYes
    Free/Freemium Version
    YesNo
    Premium Consulting/Integration Services
    NoYes
    Entry-level Setup FeeNo setup feeOptional
    Additional DetailsPaid plans start at $20/month and include: 251 - 500 contacts 5,000 monthly email sends 150 SMS/MMS sending credits Applicable SMS carrier fees Mobile push notifications (free beta) Email and chat support Additional contacts, email and text sending credits, and service plans available to meet the needs of any size business. View all of our pricing and estimate your total cost of ownership at klaviyo.com/pricing—
    More Pricing Information
    Community Pulse
    KlaviyoOptimizely Web Experimentation
    Considered Both Products
    Klaviyo
    No answer on this topic
    Optimizely
    No answer on this topic
    Key User Insights
    Would buy again
    95%
    Would buy again
    115 Answers
    95%
    Would buy again
    89 Answers
    Delivers good value for the price
    96%
    Delivers good value for the price
    107 Answers
    96%
    Delivers good value for the price
    69 Answers
    Happy with the feature set
    97%
    Happy with the feature set
    117 Answers
    95%
    Happy with the feature set
    89 Answers
    Lived up to sales and marketing promises
    95%
    Lived up to sales and marketing promises
    104 Answers
    91%
    Lived up to sales and marketing promises
    52 Answers
    Implementation went as expected
    94%
    Implementation went as expected
    105 Answers
    87%
    Implementation went as expected
    58 Answers
    Features
    KlaviyoOptimizely Web Experimentation
    Email & Online Marketing
    Comparison of Email & Online Marketing features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    8.4
    134 Ratings
    8% above category average
    Optimizely Web Experimentation
    -
    Ratings
    WYSIWYG email editor8.4120 Ratings00 Ratings
    Dynamic content8.2126 Ratings00 Ratings
    Ability to test dynamic content7.6118 Ratings00 Ratings
    Landing pages8.02 Ratings00 Ratings
    A/B testing8.3120 Ratings00 Ratings
    Mobile optimization8.6129 Ratings00 Ratings
    Email deliverability reporting8.7132 Ratings00 Ratings
    List management8.6132 Ratings00 Ratings
    Triggered drip sequences8.8118 Ratings00 Ratings
    Lead Management
    Comparison of Lead Management features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    7.6
    103 Ratings
    4% below category average
    Optimizely Web Experimentation
    -
    Ratings
    Lead nurturing automation8.298 Ratings00 Ratings
    Lead scoring and grading7.150 Ratings00 Ratings
    Data quality management7.860 Ratings00 Ratings
    Automated sales alerts and tasks7.253 Ratings00 Ratings
    Campaign Management
    Comparison of Campaign Management features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    8.2
    47 Ratings
    8% above category average
    Optimizely Web Experimentation
    -
    Ratings
    Calendaring8.247 Ratings00 Ratings
    Reporting & Analytics
    Comparison of Reporting & Analytics features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    7.8
    129 Ratings
    4% above category average
    Optimizely Web Experimentation
    -
    Ratings
    Dashboards8.1129 Ratings00 Ratings
    Standard reports7.7125 Ratings00 Ratings
    Custom reports7.585 Ratings00 Ratings
    Platform & Infrastructure
    Comparison of Platform & Infrastructure features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    8.1
    107 Ratings
    6% above category average
    Optimizely Web Experimentation
    -
    Ratings
    API8.4100 Ratings00 Ratings
    Role-based workflow & approvals8.255 Ratings00 Ratings
    Customizability7.374 Ratings00 Ratings
    Integration with Salesforce.com8.320 Ratings00 Ratings
    Third-party software integrations8.150 Ratings00 Ratings
    Testing and Experimentation
    Comparison of Testing and Experimentation features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    -
    Ratings
    Optimizely Web Experimentation
    8.0
    163 Ratings
    5% below category average
    a/b experiment testing00 Ratings9.0163 Ratings
    Split URL testing00 Ratings8.5135 Ratings
    Multivariate testing00 Ratings8.4139 Ratings
    Multi-page/funnel testing00 Ratings7.9126 Ratings
    Cross-browser testing00 Ratings8.197 Ratings
    Mobile app testing00 Ratings8.075 Ratings
    Test significance00 Ratings8.4147 Ratings
    Visual / WYSIWYG editor00 Ratings8.1133 Ratings
    Advanced code editor00 Ratings7.9125 Ratings
    Page surveys00 Ratings6.217 Ratings
    Visitor recordings00 Ratings8.418 Ratings
    Preview mode00 Ratings7.6145 Ratings
    Test duration calculator00 Ratings7.9112 Ratings
    Experiment scheduler00 Ratings8.2112 Ratings
    Experiment workflow and approval00 Ratings7.890 Ratings
    Dynamic experiment activation00 Ratings7.574 Ratings
    Client-side tests00 Ratings7.896 Ratings
    Server-side tests00 Ratings7.250 Ratings
    Mutually exclusive tests00 Ratings8.280 Ratings
    Audience Segmentation & Targeting
    Comparison of Audience Segmentation & Targeting features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    -
    Ratings
    Optimizely Web Experimentation
    8.2
    152 Ratings
    7% below category average
    Standard visitor segmentation00 Ratings8.4147 Ratings
    Behavioral visitor segmentation00 Ratings7.6122 Ratings
    Traffic allocation control00 Ratings9.1144 Ratings
    Website personalization00 Ratings7.8111 Ratings
    Results and Analysis
    Comparison of Results and Analysis features of Klaviyo and Optimizely Web Experimentation
    Feature
    Klaviyo
    -
    Ratings
    Optimizely Web Experimentation
    8.3
    149 Ratings
    4% below category average
    Heatmap tool00 Ratings9.313 Ratings
    Click analytics00 Ratings8.833 Ratings
    Scroll maps00 Ratings8.517 Ratings
    Form fill analysis00 Ratings8.072 Ratings
    Conversion tracking00 Ratings8.744 Ratings
    Goal tracking00 Ratings8.2127 Ratings
    Test reporting00 Ratings7.9137 Ratings
    Results segmentation00 Ratings7.7103 Ratings
    CSV export00 Ratings7.9102 Ratings
    Experiments results dashboard00 Ratings8.049 Ratings
    Best Alternatives
    KlaviyoOptimizely Web Experimentation
    Small Businesses
    Vbout
    Score9.9 out of 10
    Google Optimize
    Score6.7 out of 10
    Medium-sized Companies
    Bloomreach
    Score9.2 out of 10
    AB Tasty
    Score8.6 out of 10
    Enterprises
    Iterable
    Score8.2 out of 10
    Google Content Experiments (discontinued)
    Score7.3 out of 10
    All AlternativesView all alternativesView all alternatives
    User Ratings
    KlaviyoOptimizely Web Experimentation
    Likelihood to Recommend
    8.4
    (134 ratings)
    8.7
    (254 ratings)
    Likelihood to Renew
    9.5
    (4 ratings)
    9.5
    (51 ratings)
    Usability
    8.0
    (3 ratings)
    10.0
    (58 ratings)
    Availability
    -
    (0 ratings)
    10.0
    (7 ratings)
    Performance
    -
    (0 ratings)
    7.3
    (6 ratings)
    Support Rating
    9.0
    (1 ratings)
    10.0
    (16 ratings)
    Online Training
    -
    (0 ratings)
    3.0
    (1 ratings)
    Implementation Rating
    10.0
    (1 ratings)
    8.0
    (11 ratings)
    Configurability
    -
    (0 ratings)
    6.0
    (1 ratings)
    Product Scalability
    -
    (0 ratings)
    8.0
    (163 ratings)
    User Testimonials
    KlaviyoOptimizely Web Experimentation
    Likelihood to Recommend
    Klaviyo
    Klaviyo is a leader in the space, but I might recommend it to a colleague for its price point. There are other options that are more affordable and provide most of the tools Klaviyo offers. I also think it can be complicated to use for a new user.
    Incentivized
    Read full review
    Optimizely
    I think it can serve the whole spectrum of experiences from people who are just getting used to web experimentation. It's really easy to pick up and use. If you're more experienced then it works well because it just gets out of the way and lets you really focus on the experimentation side of things. So yeah, strongly recommend. I think it is well suited both to small businesses and large enterprises as well. I think it's got a really low barrier to entry. It's very easy to integrate on your website and get results quickly. Likewise, if you are a big business, it's incrementally adoptable, so you can start out with one component of optimizing and you can build there and start to build in things like data CMS to augment experimentation as well. So it's got a really strong a pathway to grow your MarTech platform if you're a small company or a big company.
    Incentivized
    Read full review
    Pros
    Klaviyo
    • Klaviyo's template builder is very intuitive yet straightforward enough that an inexperienced user can catch on quickly.
    • Their flow builder is also quite intuitive and allows us to build intricate, highly targeted flows.
    • I appreciate their built-in compliance warnings & checks as they apply to opt-out methods, SMS compliance, and overall deliverability.
    Incentivized
    Read full review
    Optimizely
    • The Platform contains drag-and-drop editor options for creating variations, which ease the A/B tests process, as it does not require any coding or development resources.
    • Establishing it is so simple that even a non-technical person can do it perfectly.
    • It provides real-time results and analytics with robust dashboard access through which you can quickly analyze how different variations perform. With this, your team can easily make data-driven decisions Fastly.
    Incentivized
    Read full review
    Cons
    Klaviyo
    • Needs more visible critical notifications as we once exceeded our monthly email limit right during the Black Friday campaign. The notification was not visible enough for us to catch it on time, as a result, some emails scheduled to be sent over the weekend were never sent
    • Better library of dynamic values available for use inside emails
    Incentivized
    Read full review
    Optimizely
    • JavaScript is hard to implement sometimes especially for JQuery elements
    • ROI reporting should be part of the overall experimentation reporting
    • CMP integration: where we can easily show status of test on the HPT request
    • CMS integration
    • More widgets like social proof banners, etc.
    Incentivized
    Read full review
    Likelihood to Renew
    Klaviyo
    Klaviyo is simply a great solution for e-com email marketing & customer relationship management:
    1. User journey visibility: We can see our clients' customers on their individual user journeys (open email, site visits) to better understand and accommodate your customers.
    2. Flow automation: Creating automated emails that follow up with new leads, those who abandoned carts, purchased.
    3. Email design: So easy to use, and more friendly than some other visual builders that we've used.
    4. Metrics visibility: We can see our clients' metrics very easily and adjust efforts accordingly.
    Incentivized
    Read full review
    Optimizely
    I rated this question because at this stage, Optimizely does most everything we need so I don't foresee a need to migrate to a new tool. We have the infrastructure already in place and it is a sizeable lift to pivot to another tool with no guarantee that it will work as good or even better than Optimizely
    Incentivized
    Read full review
    Usability
    Klaviyo
    The only reason why I did not give it a 10/10 is that it cannot distinguish purchases that came through subscription recharges instead of purchases that were driven directly by email sends. Other than that, the automation qualities, design features, and segmentation options make this an incredible email platform, and I am very happy with it
    Incentivized
    Read full review
    Optimizely
    Optimizely Web Experimentation's visual editor is handy for non-technical or quick iterative testing. When it comes to content changes it's as easy as going into wordpress, clicking around, and then seeing your changes live--what you see is what you get. The preview and approval process for sharing built experiments is also handy for sharing experiments across teams for QA purposes or otherwise.
    Incentivized
    Read full review
    Reliability and Availability
    Klaviyo
    No answers on this topic
    Optimizely
    I would rate Optimizely Web Experimentation's availability as a 10 out of 10. The software is reliable and does not experience any application errors or unplanned outages. Additionally, the customer service and technical support teams are always available to help with any issues or questions.
    Incentivized
    Read full review
    Performance
    Klaviyo
    No answers on this topic
    Optimizely
    I would rate Optimizely Web Experimentation's performance as a 9 out of 10. Pages load quickly, reports are complete in a reasonable time frame, and the software does not slow down any other software or systems that it integrates with. Additionally, the customer service and technical support teams are always available to help with any issues or questions.
    Incentivized
    Read full review
    Support Rating
    Klaviyo
    Their support is always quick and we have recurring meetings with our advisor. they were great when we first started at walking us through the platform and helping us understand how to do the overall setup. They also have a wide variety of articles that cover must issues in a very clear manner that will get you out of a predicament really fast.
    Incentivized
    Read full review
    Optimizely
    They always are quick to respond, and are so friendly and helpful. They always answer the phone right away. And [they are] always willing to not only help you with your problem, but if you need ideas they have suggestions as well.
    Read full review
    Online Training
    Klaviyo
    No answers on this topic
    Optimizely
    The tool itself is not very difficult to use so training was not very useful in my opinion. It did not also account for success events more complex than a click (which my company being ecommerce is looking to examine more than a mere click).
    Read full review
    Implementation Rating
    Klaviyo
    Don't cut corners, do it right the first time, if you take your time to build everything the way you want it then it will run itself. The platform will help you increase revenue as long as you use the tools it provides. Don't be scared to ask questions, the support team will help you get to the next level
    Incentivized
    Read full review
    Optimizely
    In retrospect: - I think I should have stressed more demo's / workshopping with the Optimizely team at the start. I felt too confident during demo stages, and when came time to actually start, I was a bit lost. (The answer is likely I should have had them on-hand for our first install.. they offered but I thought I was OK.) - Really getting an understanding / asking them prior to install of how to make it really work for checkout pages / one that uses dynamic content or user interaction to determine what the UI does. Could have saved some time by addressing this at the beginning, as some things we needed to create on our site for Optimizely to "use" as a trigger for the variation test. - Having a number of planned/hoped-for tests already in-hand before working with Optimizely team. Sharing those thoughts with them would likely have started conversations on additional things we needed to do to make them work (rather than figuring that out during the actual builds). Since I had development time available, I could have added more things to the baseline installation since my developers were already "looking under the hood" of the site.
    Read full review
    Alternatives Considered
    Klaviyo
    Klaviyo's ability to really tackle the entire marketing contact ecosystem on one platform is what really won us over. The price for everything was competitive, not necessarily the cheapest but competitive, and the ability to see that data flow from every interaction was what was crucial to us. Additionally, Klaviyo is the core of our B2C business. We were not focused on anything other than how we interact with customers directly, and Klaviyo was a direct win for us. The one negative is Klaviyo's ability to work with our B2B side of our business, because it doesn't integrate with platforms like HubSpot. That is a massive downside, but the upside justified the investment.
    Incentivized
    Read full review
    Optimizely
    The ability to do A/B testing in Optimizely along with the associated statistical modelling and audience segmentation means it is a much better solution than using something like Google Analytics were a lot more effort is required to identify and isolate the specific data you need to confidently make changes
    Incentivized
    Read full review
    Scalability
    Klaviyo
    No answers on this topic
    Optimizely
    We can use it flexibly across lines of business and have it in use across two departments. We have different use cases and slightly different outcomes, but can unify our results based on impact to the bottom line. Finally, we can generate value from anywhere in the org for any stakeholders as needed.
    Incentivized
    Read full review
    Return on Investment
    Klaviyo
    • Klaviyo brought our email channel to the top performing channel over Paid Ads several times (according to G Analytics), before Klaviyo Paid Ads were always top and the email channel struggled to even stay in 2nd place.
    • Klaviyo did cost quite a bit more than our old email platform but the ROI was much higher so it paid for itself.
    • Klaviyo implemented tools that allowed us to have a higher customer satisfaction with things like letting customers choose to receive less emails instead of unsubscribing.
    Incentivized
    Read full review
    Optimizely
    • We're able to share definitive annualized revenue projections with our team, showing what would happen if we put a test into Production
    • Showing the results of a test on a new page or feature prior to full implementation on a site saves developer time (if a test proves the new element doesn't deliver a significant improvement.
    • Making a change via the WYSIWYG interface allows us to see multiple changes without developer intervention.
    Incentivized
    Read full review
    ScreenShots

    Klaviyo Screenshots

    Screenshot of Web forms to grow contact listsScreenshot of Personalized recommendations that resonateScreenshot of Smarter targeting. Deeper personalization.Screenshot of Display of how performance stacks up against peers

    Optimizely Web Experimentation Screenshots

    Screenshot of AI-Powered Experimentation with Opal:

- Instant Test Ideas: Generates high-quality A/B test ideas based on any goals and audience insights.
- Smarter Experimentation: The AI can suggest impactful variations, reducing guesswork and increasing test velocity.
- More Than Just Ideas: From hypothesis generation to analyzing results, Opal helps optimize every stage of the experimentation process.Screenshot of the new Visual Editor with an AI Variation Development Agent

Create simple or advanced website changes fast without writing a line of code with our AI Development Agent.

Use natural language to build out your ideas and apply brand styles to your experiments instantly.Screenshot of Advanced Audience Targeting:

- Delivers personalized experiences by targeting users based on behaviors, attributes, and real-time conditions.
- Defines precise audience segments using first-party data, geolocation, and device type.
- Can test and optimize for different audience groups to maximize impact and engagement.Screenshot of Variation Template

Library of experience templates that you can access right within the Visual Editor. Customize these templates or create your own to easily reuse throughout your experimentation program.

- Offers pre-built templates for common test setups.
- Standardized variations and maintains brand integrity with reusable templates.
- Templates can be customized visually or tweak them with code for full flexibility.Screenshot of Web Experimentation Results Page:

- Data visualizations help interpret experiment performance.
- Displays which variations are winning with built-in statistical significance calculations.
- Results can be filtered by audience segments, events, and conversions to uncover key trends.Screenshot of the custom code editor for JavaScript & CSS changes, used to build complex tests.