The Klaviyo alternative
priced per email

Klaviyo is an e-commerce marketing platform with SMS, predictive analytics and native store integrations, priced by contact count. Plunk covers the email side, from order confirmations to abandoned-cart flows, and only charges for emails sent.

How Plunk differs from Klaviyo

October usage

48,210 contacts
Free
10,000 emails sent
$10.00
Total$10.00

Pay for emails, not contacts

With 10,000 active profiles, Klaviyo’s email plan costs around $150 a month. Plunk stores contacts at no cost and charges only for the emails you send.

Password reset

To ana@acme.com · 2m ago

Delivered

Receipt #3980

To tom@acme.com · 9m ago

Delivered

Order emails from your backend

Send order confirmations and shipping notifications from your store with a single API call.

Trigger

Contact signs up

Send email

Welcome to Acme

Delay

Wait 3 days

Abandoned cart and post-purchase flows

Build automated sequences triggered by events from Shopify, WooCommerce or your own store, sent through webhooks or the API.

Which one is right for you?

Choose Plunk if

  • You want e-commerce email without contact-based pricing
  • You are comfortable connecting your store through an API
  • You want open source, with the option to self-host

Choose Klaviyo if

  • You want a native Shopify app with pre-built flows
  • You send SMS marketing alongside email
  • You rely on predictive analytics and AI product recommendations

Feature by feature

FeaturePlunkKlaviyo
Pricing modelPay-as-you-goContact-based tiers
Open source
Self-hostable
Transactional emails
Marketing campaigns
Workflow automation
E-commerce integrationAPI-basedNative deep
SMS marketing
Predictive analytics

Frequently asked questions

Run your store's email without paying per contact.

Start on the free plan with 1,000 emails a month, no credit card needed. When you need more, every email is $0.001, with unlimited contacts and every feature included.