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KlaviyovsMailchimp

TL;DR

Both platforms start free with the same ceiling — 250 people and a few hundred sends — then price by audience size. Klaviyo's email tier begins at $20 per month for 251 to 500 active profiles, and the email-plus-SMS tier at $35 for the same profile band, with $5 of mobile messages included on the free plan and email support limited to the first 60 days. Mailchimp's free plan caps at 250 contacts and 500 sends a month, and its paid ladder is Essentials at $13/mo, Standard at $20/mo and Premium at $350/mo on a twelve-month term, with sends at 10x, 12x and 15x your list. Klaviyo is built for stores that want behaviour-driven flows and SMS in one account; Mailchimp is cheaper at the small end and broader for general marketing.

Mailchimp keeps a conventional ladder. Free accepts up to 250 contacts, one seat, one audience and a maximum of 500 sends a month with no automation flows. Essentials is $13 per month on a twelve-month term, opens three seats and three audiences, and sends at ten times your contact count with up to four automation flow steps. Standard is $20 per month with five seats, five audiences, sends at twelve times contacts and up to 200 automation flows, and carries the 14-day trial. Premium is $350 per month with unlimited seats and audiences, sends at fifteen times contacts and priority support. Contact or send limits that are passed trigger overage charges, and sending pauses when a limit is exceeded on the free tier.

For a store deciding between them, the question is what triggers the email. Klaviyo's centre of gravity is event data: browse and cart events feed segments and flows directly, and SMS sits in the same account as email, which is why its entry paid tier is $20 rather than $13. Mailchimp's centre of gravity is the campaign: templates, testing, reporting and a wide integration catalogue at a lower entry price, with SMS available as an add-on on Essentials and above. Both stop free at 250 people, so the first paid invoice is where the difference becomes real.

Pros & cons

👍 Klaviyo Pros

  • Free tier: 250 active profiles, 500 emails a month, $5 of mobile messages and $5 of Composer usage
  • Email tier starts at $20/mo for 251-500 profiles; email plus SMS starts at $35 for the same band
  • Segments, flows and reporting built on store events rather than on manual list rules
  • Standard integrations are available on the free plan, so a store can connect before paying

👎 Klaviyo Cons

  • The entry paid tier is $7 a month above Mailchimp's Essentials for the same audience size
  • Email support covers only the first 60 days on the free plan
  • Profile count sets the price, so a growing list moves the invoice upward quickly

👍 Mailchimp Pros

  • Essentials at $13/mo, Standard at $20 and Premium at $350 — all published on a twelve-month term
  • Free plan accepts 250 contacts with 500 sends a month, one seat and one audience
  • Standard includes 200 automation flows, five seats and five audiences for $20/mo
  • Broader general marketing toolkit: templates, testing, surveys and a large integration catalogue

👎 Mailchimp Cons

  • Free tier has no automation flows and stops at 500 sends a month
  • Premium at $350/mo is a steep step from Standard, driven by contact growth
  • SMS is an add-on on paid tiers rather than part of a single email-plus-SMS price

Side by side

FeatureKlaviyoMailchimp
Free tier250 active profiles, 500 emails/month, $5 of SMS250 contacts, 1 seat, 500 sends/month, no flows
Entry paid planEmail from $20/mo for 251-500 active profilesEssentials $13/mo on a twelve-month term
Second tierEmail + SMS from $35/mo for 251-500 profilesStandard $20/mo: 5 seats, 200 automation flows
Top tierPriced by profile band and channel mixPremium $350/mo: unlimited seats and audiences
Send allowance500 emails/month free; paid tiers scale with profiles500/month free, then 10x, 12x, 15x contacts by plan
SMS$5 of mobile messages included monthly, email + SMS tier at $35Add-on on paid tiers; SMS and MMS add-on on Standard and Premium
SupportEmail support for the first 60 days on freeHelp centre and email support; priority support on Premium
Pricing driverActive profiles in the accountContact count and plan tier

Verdict

Pick Klaviyo if

Choose Klaviyo if the revenue comes from store events

When abandoned carts, browse signals and post-purchase flows are the reason the tool exists, Klaviyo's event model does the work that Mailchimp asks you to build with rules. Expect to start at $20/mo for the 251-500 profile band and $35 if SMS rides in the same account — more than Mailchimp, but that is the feature you are paying for.

Pick Mailchimp if

Choose Mailchimp if the job is the campaign

For a general audience newsletter, announcements and straightforward automations, Mailchimp's $13 entry and $20 Standard undercut Klaviyo while adding seats and audiences. It is also the safer home for a list that is not a store: the contact ladder is simple, and nothing about the price assumes an integration with commerce data.

What the vendors say, and what we did not measure

No independent reviews, ratings or user quotes were collected for this page, so none appear above. Every figure and claim comes from the vendors' own pricing and product pages as retrieved for this article.

Who Should Use Which?

Use Klaviyo if you...

  • The store sends behaviour-triggered flows and needs segments built from purchase data
  • SMS and email must live in one account with one audience
  • Revenue per recipient is the metric the team reports on

Use Mailchimp if you...

  • The list is a general audience rather than a customer base
  • Monthly budget needs to sit below $20 while the audience grows
  • Templates, surveys and broad integrations matter more than event pipelines

FAQ

Why does Klaviyo cost more than Mailchimp at the same list size?

Klaviyo's $20 entry tier prices behavioural data and SMS alongside email, while Mailchimp's $13 Essentials covers campaign sending with automation limited to four flow steps. The gap buys event-driven segmentation rather than a larger send allowance.

How big can my list be before I pay?

Both platforms stop their free tier at 250 people. Klaviyo counts active profiles and allows 500 emails a month; Mailchimp counts contacts and allows 500 sends a month with one seat and one audience.

Is Klaviyo's free plan permanent?

It can run indefinitely while the account stays under 250 active profiles and 500 monthly emails, with $5 of mobile messages included. Once the limits are passed, sending is restricted until you upgrade.

What does Mailchimp charge after the promotional term?

The listed prices — $13, $20 and $350 — are shown on a twelve-month term. Contact count is the other lever: each plan carries a send multiplier of 10x, 12x or 15x your contacts, and overage applies when a limit is passed.

Can both migrate an existing list?

Yes. Each accepts a CSV import and offers platform integrations for the common stores. Automations and segments have to be rebuilt in the new tool's editor in both cases, which is usually the longer part of the move.

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Heraldware analysis engine

reviewed · data sourced from official product pages · sources: klaviyo.com, mailchimp.com