Klaviyo shows up on more Shopify billing invoices than almost any other app. It's also one of the charges that surprises merchants the most — because costs scale fast with list size, and upgrading feels mandatory.
This post breaks down exactly what Klaviyo costs, when those costs are justified, and when you're better off switching to a cheaper alternative that does the job for your store size.
How Klaviyo's tiering works
Klaviyo charges based on the number of active profiles (contacts) in your account. The free tier covers up to 250 contacts and 500 email sends — enough to get started, not enough to run a real store. Every tier above that doubles or triples your monthly send allowance along with the jump in contact count.
The chart above shows the cost curve on both the Email only plan and the combined Email + SMS plan. The SMS surcharge is a flat premium, not a percentage — so SMS gets relatively cheaper (as a % of total) at higher tiers.
Note on contact counting: Klaviyo counts all active profiles against your limit — including unsubscribed contacts who haven't opted out. Regular list cleaning (suppressing inactive profiles) can meaningfully reduce your plan tier.
Where Klaviyo costs spike
Two list size thresholds catch merchants off guard:
Many stores hit this tier after a successful BFCM campaign or pop-up drive. The list doubled, the plan jumped, but open rates usually dropped — meaning the new contacts aren't as engaged as the original list.
At this tier, merchants are paying for a significant segment that's likely inactive. A list clean-up — removing unopened contacts over 90 days — often brings the count back under the lower tier threshold.
When Klaviyo is worth the cost
Klaviyo earns its premium over alternatives in specific situations:
You actively use behavioral segmentation — flows triggered by specific browse or purchase events
You have a dedicated email marketer or agency running campaigns (they need Klaviyo's reporting depth)
You're split-testing flows and need A/B testing across automation sequences
You're running complex post-purchase flows with conditional splits (VIP vs. first-time buyers)
Your attributed email revenue exceeds $5K/month (Klaviyo's revenue attribution is more reliable than alternatives at scale)
Klaviyo's features only pay for themselves if someone on your team actually uses them. For most stores under $500K GMV, the answer is: they don't.
When a cheaper alternative makes sense
You send newsletters + basic abandoned cart flows
Save $30–100/moOmnisend ($16–59/mo) or Shopify Email (included) handle this. Klaviyo's advanced segmentation is unused.
You need email + SMS in one tool
Save $50–150/moOmnisend includes SMS. Running Klaviyo + a separate SMS app costs $100–200+/mo for functionality Omnisend covers for $59/mo.
Your list is under 5,000 contacts
Save $20–60/moMailchimp, Drip, and Omnisend all price more aggressively at smaller list sizes. Klaviyo's pricing is only competitive at 10K+ contacts with heavy feature use.
Your open rates are below 15%
Save $50–150/mo + better deliverabilityThis indicates a list quality or deliverability issue — not a platform issue. Switching to a cheaper tool and cleaning your list solves more than staying on Klaviyo's higher tiers.
Klaviyo vs. alternatives at 5K contacts
Same list size, same email-only plan tier. The gap between Klaviyo and its nearest competitor is nearly double — that's the premium you pay for Klaviyo's segmentation depth.
Pricing is for the email-only plan at 5,000 contacts. SMS add-ons, advanced support tiers, and transactional email volume can shift the order — but the ranking holds for the most common newsletter + abandoned-cart workload.
The honest Klaviyo verdict
Klaviyo is the right tool if your store generates significant email revenue, you use advanced flows, and someone actively manages the platform. For most stores under $500K GMV doing basic email marketing, Omnisend at $59/month covers 90% of the use case at 40% of the cost.
The most common overspend pattern: merchants on Klaviyo's $150–200/month tier who are only sending newsletters and abandoned cart emails — exactly what Omnisend does on its $59 plan.