Klaviyo
The value is the network, the data or the infrastructure. Keep paying.
Email and SMS marketing built around e-commerce: it reads your store, knows what each customer bought, and drives flows like abandoned cart and post-purchase from that.
Build the two flows that earn the money. Leave the rest. BE HONEST - Klaviyo earns its fee on attribution and predictions. If you need those, keep paying - Abandoned cart and post-purchase are most of the revenue and are a weekend STACK - Your store database, a worker, Resend or SES WHAT YOU NEED FROM THE STORE - Carts with a timestamp and a customer, orders, and products - A webhook or a poll for cart updates — do not copy the whole catalogue ABANDONED CART - A cart untouched for 4 hours with an identified customer and no order since - Three mails at 4 hours, 24 hours and 3 days, each cancelled the moment an order lands POST-PURCHASE - Thank you on dispatch, review request 14 days after delivery - Suppress the review request if a support ticket was opened ATTRIBUTION, SIMPLY - A signed click id on every link; an order within 5 days of a click is credited to that mail - Report revenue per flow from that, and say out loud that it is last-click Include the schema, the two flows and a README on the attribution window.
What you lose
- A live connection to the store — orders, carts, catalogue and browsing — that keeps flows accurate without you writing a sync
- Revenue attributed per flow and per campaign, which is how the spend gets justified internally
- Predictive figures like expected lifetime value and next order date, trained on data far beyond your own store
- SMS delivery with the carrier registration and compliance already handled
If you would rather not build
- Brevo, for a cheaper version of the same
- Your platform's built-in email, which is often enough at the start
The escape hatch
open source · no votes, no paid placement
Listmonk
$0Self-hosted campaigns with an API you can call from store webhooks.
knadh/listmonkfree · open source
Medusa
$0An open commerce backend whose events can drive your own flows.
medusajs/medusafree · open source
Why this verdict
our own opinion · changed only by a person
26/100
Verdict no at 26. The flows are copyable; the store integration, the predictions and above all the revenue reporting are what the price buys.
History
tracked since 10 Aug 2026 · nothing is ever overwritten
Nothing recorded yet. This chart fills in once the page has visitors, votes or prompt copies — it will not draw a flat line to look busy.
Questions about Klaviyo
answered from the record above
Is Klaviyo free?
No — the plan we track is $45 a month. From around $45/month billed monthly for 1,500 contacts; the price climbs steeply with list size and SMS.
Can you replace Klaviyo by building your own?
KEEP IT. The value is the network, the data or the infrastructure. Keep paying. Replacement score 26 out of 100, build time longer than it saves. Read what you lose before you decide.
How much does Klaviyo cost?
$45 a month on Email — $540 a year. Recorded 9 Aug 2026.
What do you lose by replacing Klaviyo?
A live connection to the store — orders, carts, catalogue and browsing — that keeps flows accurate without you writing a sync; Revenue attributed per flow and per campaign, which is how the spend gets justified internally; Predictive figures like expected lifetime value and next order date, trained on data far beyond your own store; SMS delivery with the carrier registration and compliance already handled. If any of those carry weight for you, keep paying.
Is there an open-source alternative to Klaviyo?
Yes: Listmonk, Medusa. The prompt on this page is for when you want it your way instead.
Related entries
same category first, most replaced first
WiseStamp
Mailtrack
CuratedEvery week, something stops being worth paying for.
New verdicts, prices that moved, entries added. One email a week. Unsubscribe in one click.
free forever · no tracking pixel · every prompt stays free on the site