Overview

Klaviyo combines campaign tools with a helpdesk for ticket management, customer context, omnichannel support and AI automation. That mix can help teams handle marketing and service in one platform, but may be excessive for businesses focused on a single channel. Klaviyo says its Customer Agent resolves 65% of questions autonomously.

Founded in 2012 and headquartered in Boston, Klaviyo says it powers more than 205,000 brands across 100 countries.

Key features

Campaigns and channels

Email automation, audience segmentation, landing pages and A/B testing cover key campaign tasks from targeting through evaluation. Klaviyo supports email, SMS, RCS, mobile push, WhatsApp and social marketing. That channel range is useful when a team needs coordinated outreach, but the free plan's 500 monthly email sends and $5 mobile-message budget are restrictive for regular campaigns.

Integrations and data controls

The marketplace offers more than 350 integrations, while developers can build apps and connections using APIs, webhooks, SDKs and warehouse syncs. These options suit businesses with existing systems or technical resources; they may matter less to a small team with basic campaign needs. Klaviyo is SOC 2 Type II certified, provides GDPR-related data-processing measures and tools for data-subject rights requests, and states that it offers EU and US data residency.

Pricing

Klaviyo uses a freemium model. The Free plan costs 0.00 USD per free, billed monthly, and includes up to 250 active profiles, 500 email sends per month, $5 of mobile messages and $5 of Composer usage per month. It can remain available indefinitely while account limits are maintained, making it a low-commitment way to start, though the small quotas limit its usefulness for larger audiences. Free users receive full email support for the first 60 days, and sending may be paused or restricted if free-plan limits are exceeded.

The Email plan has custom pricing and includes 15,000 emails per month. Enterprise also has custom pricing and is aimed at large organizations with advanced needs. No seat allowance or trial term is provided for either paid plan.

Platforms

Klaviyo is available on the web.

Who it's for

Klaviyo is a good fit for businesses that want marketing across multiple channels, audience segmentation and automation alongside customer-service tools. Its developer options and broad integration marketplace also suit teams connecting campaigns to other systems. A business that only needs a small email allowance may find the free tier sufficient; one that needs substantial volume should weigh the custom-priced plans against its budget. Those seeking a single-channel tool may not need Klaviyo's breadth.

Pros and cons

Pros: Six marketing channels, automation, segmentation, landing pages and A/B testing bring a broad campaign toolkit together.
Pros: More than 350 integrations plus APIs, webhooks, SDKs and warehouse syncs support connections to other systems.
Pros: The free plan has no fixed end date while limits are maintained, offering an ongoing entry point.
Cons: Free is capped at 250 active profiles and 500 monthly email sends, with only $5 each for mobile messages and Composer usage.
Cons: Sending can be paused or restricted after free-plan limits are exceeded, so the tier requires close quota management.
Cons: Email and Enterprise pricing is custom, making paid-plan costs harder to assess in advance.

Alternatives

Mailchimp is worth considering for a small web or mobile audience: its free plan includes 250 contacts, 500 emails per month, a 250-email daily cap, one audience and one seat. Omnisend is another free option, with 250 contacts, 500 emails per month and 500 web push notifications; its Standard plan costs 16.00 USD per month.

SendPulse offers a free plan for 500 subscribers and 15,000 emails per month, alongside five automated flows. Freshmarketer may suit teams starting with 100 marketing contacts and 500 monthly email sends on its free plan.

Mautic provides a 14-day trial with all features and no credit card required. Manago AI (formerly SALESmanago) is a paid platform with a free trial. Twilio Segment offers a free plan with 1,000 visitors per month, 500,000 Reverse ETL records per month, two sources and more than 700 integrations. EngageBay has a free plan for up to 15 users and 250 contacts and companies.

Browse Marketing Automation Software, Nonprofit Marketing Software, AI Customer Service Agents, Customer Lifetime Value Software, Customer Journey Orchestration Software or SMS Marketing Software to compare category options.

Verdict

Choose Klaviyo if your business needs multi-channel marketing, automation and customer support tools under one web platform. Its breadth and integration options are the main draw; the narrow free quotas and custom pricing for higher-volume plans are reasons to look elsewhere if cost certainty or generous free sending matters more.

	Klaviyo	Mailmunch
Free plan	Yes	Yes
Free trial	No	Yes
Paid from	Free	—
Open source	No	No
Platforms	Web	Web
Free plan	Yes	Yes
Monthly send limit	15,000 emails/mo	—
Email automation	Yes	Yes
Audience segmentation	Yes	Yes
Landing pages	Yes	Yes
A/B testing	Yes	Yes
Native integrations	350 integrations	18 integrations

Klaviyo vs Mailmunch

Klaviyo

Mailmunch