OverviewSuggest Edit

Klaviyo is email marketing reinvented for ecommerce stores on Shopify, Bigcommerce and Magento. From personalized newsletters to automated emails like abandoned carts, order follow-ups and personalized thank you's, Klaviyo makes it easy for stores to setup great email marketing without the need for expensive systems and lots of people. In short: Klaviyo helps stores make their customers happier while also growing sales. It's time email got better.
HQBoston, US
Employee Ratings4.6

Latest Updates

Employees (est.) (Nov 2019)331(+5%)
Job Openings65

Klaviyo Office Locations

Klaviyo has an office in Boston
Boston, US (HQ)
60 South St #910
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Klaviyo Financials and Metrics

Summary Metrics

Founding Date


Klaviyo total Funding

$158.5 m

Klaviyo latest funding size

$150 m

Time since last funding

7 months ago

Klaviyo investors

Klaviyo's latest funding round in April 2019 was reported to be $150 m. In total, Klaviyo has raised $158.5 m
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Klaviyo Operating Metrics

Klaviyo's Customers was reported to be 12 k in Apr, 2019.
Dec, 2016Dec, 2018Apr, 2019


1 k5 k12 k
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Klaviyo Online and Social Media Presence

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Klaviyo News and Updates

Klaviyo raises $150M Series B after building company the old fashioned way

Klaviyo, a Boston-based email marketing firm founded in 2012, went about building its email marketing business the old fashioned way. First it built a profitable company, then it went looking for funding to accelerate the growth. Today, it announced a massive $150 million Series B with the entire su…

Klaviyo Blogs

Klaviyo Design Podcast EP 12 • Learnings from DESIGNIVAL: It's a Design Event!

The rollercoaster thrill of event planning.https://medium.com/media/55fbec9dc87dfe24e18372259c5917f5/hrefIn the summer of 2019, Klaviyo hosted our 2nd annual design event: DESIGNIVAL: It’s a Design Event!. In this post-mortem episode, we dive into the challenges of event planning, how to plan for un…

Linear Algebra Review Notebook

A few weeks ago I was looking for a tank of camping propane. I dug through all sorts of fun stuff in my garage and came across this……my linear algebra textbook from college. Matrices seem more exciting now than they did freshman year. I worked through the first few problems and put the book next to …

Once a Klaviyo, Always a Klaviyo

Everyone moves on. It’s how you and I both got to where we work right this minute. Even though it’s exciting to jump into a new gig, we leave behind friends, routines, lunch spots, things that are important to us, things that will be missed. Everyone moves on, but we’ll come back to that. Right now …

Checking the math on personalized send time

Last month, we wrote an article arguing that an A/B test was the best way to find the optimal send time for a group of customers. We said it would be impractical to A/B test at the individual level, and in this post we’ll explain why. We’ll start with some basic intuition and then take you through t…

Using Redis one-way gates to eliminate massively parallel high speed race conditions

At Klaviyo we send billions of emails per month, so we often run into problems of scale in the strangest of places. In order to send out this many emails and then process the results, we have to massively parallelize our data flows. When sending emails, we break up each group of emails (for a campai…

Why does Klaviyo’s Smart Send Time optimize for open rates?

Klaviyo is about making your business grow. We like to measure everything by revenue. But for Smart Send Time, we measure open rate. Why?Conversions are rare events. A conversion rate of 0.1% for a campaign is fairly typical. Comparing the rates of rare events is extremely difficult since there is h…
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Klaviyo Frequently Asked Questions

  • When was Klaviyo founded?

    Klaviyo was founded in 2012.

  • How many employees does Klaviyo have?

    Klaviyo has 331 employees.

  • Who are Klaviyo competitors?

    Competitors of Klaviyo include MDirector, Omnisend and Privy.

  • Where is Klaviyo headquarters?

    Klaviyo headquarters is located at 60 South St #910, Boston.

  • Where are Klaviyo offices?

    Klaviyo has an office in Boston.

  • How many offices does Klaviyo have?

    Klaviyo has 1 office.