- Email + SMS in one platform at one bill — no separate Postscript subscription
- Pre-built ecom automations out of the box (cart abandonment, post-purchase, browse abandonment)
- Pricing materially below Klaviyo at the same contact count — ~40% cheaper in our test
- Free tier (250 contacts, 500 emails) genuinely usable for new stores
- Segmentation depth doesn't match Klaviyo on event-payload querying
- Predictive analytics (CLV, churn) exist but are coarser than Klaviyo's
- Integrations outside Shopify are fewer — solid for ecom, thin for other workflows
Best forShopify stores from $10k–$50k MRR running email + light SMS, with multiple automation flows and a real segmentation strategy.
Skip ifStores past 75k engaged contacts where Klaviyo's deeper data layer earns its keep, or single-channel email shops who never plan to do SMS.
We tested Omnisend for 45 days on a real Shopify store doing about $32k/month in revenue with 8,400 active contacts. The brief: figure out whether Omnisend’s “Klaviyo-features-at-Mailchimp-prices” pitch holds up against the bill.
Short answer: it mostly does. Long answer below.
What Omnisend gets right: the bundle
Three things ship in every Omnisend tier that you’d otherwise pay separately for in the Shopify ecosystem:
- Email + SMS in one inbox — Postscript is a standalone $99-$300/mo line item. Omnisend bundles SMS at ~$0.015/segment (vs. Postscript at $0.0085–$0.012). The volume math depends on your SMS plan; on a small store doing maybe 200 SMS sends/month, the bundling saves the Postscript subscription entirely.
- Native cart + browse + post-purchase abandonment — Klaviyo charges you for the platform, then expects you to build these. Omnisend ships pre-built flow templates that work on day one. You’ll edit the copy, but you don’t build from scratch.
- Native push notifications — Web push and mobile push are first-class. Klaviyo punted these to integrations; Omnisend treats them as a channel alongside email and SMS.
The bundling is what justifies Omnisend’s positioning. For a store at our test size (~$32k/mo), running just email through Omnisend would be a downgrade from Klaviyo. Running email + SMS + abandonment automations through Omnisend was visibly cheaper than the equivalent Klaviyo + Postscript stack.
Pricing: the curve that beats Klaviyo (until it doesn’t)
Omnisend’s tiers as of 2026:
| Plan | At 5k contacts | At 25k contacts | At 75k contacts |
|---|---|---|---|
| Free | $0 (250 contacts cap) | — | — |
| Standard | $20/mo | $130/mo | $660/mo |
| Pro | $59/mo | $230/mo | $1,000/mo |
The Standard tier is enough for most stores up to ~25k contacts; Pro unlocks SMS credits + advanced segmentation + dedicated IP options for higher-volume senders.
The break-even with Klaviyo sits around 50k contacts. Before that, Omnisend Pro is ~30-50% cheaper for equivalent feature access. After that, Klaviyo’s per-contact pricing becomes competitive AND its deeper data layer starts justifying the bill on the segmentation side.
We tested the same 4-flow automation suite on both platforms. Time to build, identical:
- Omnisend: 38 minutes (used pre-built templates, edited copy)
- Klaviyo: 64 minutes (built from scratch, more granular conditions)
- Klaviyo’s flows had 3 additional split points (e.g. “if cart contains > $100” branch) that Omnisend couldn’t replicate at the time. For 75% of stores that’s a non-issue; for stores doing serious segmentation, that’s where Klaviyo’s price starts to make sense.
- Best email + SMS bundle on the market — the cost saving over a split stack is real
- Free tier handles the first 250 contacts of a new store at $0
- Templates ship working on day one — faster time-to-first-send than any competitor
- Segmentation has a ceiling — complex multi-condition queries can't be expressed cleanly
- Reporting depth is shallower than Klaviyo (no flow-attributed revenue at fine granularity)
- Customer support response times are 4-12 hours — slower than Klaviyo's 1-4 hour median
SMS: real, regulated, and worth the bundle
Omnisend’s SMS is genuinely first-class in their product, not an afterthought. Subscriber collection happens via the same opt-in widgets as email; sends are billed per-segment ($0.015 US/CA, higher internationally). Compliance — TCPA, GDPR — is handled correctly by default.
We tested a launch SMS campaign + a cart-abandonment SMS flow. Click-through rates ran 11-14% (industry-typical for SMS), and conversion was healthy. The SMS-side analytics are noticeably lighter than email — you get send count, click count, replies, but no deep funnel attribution. For most stores that’s enough.
The catch: SMS is only useful if you have a list. If you’re starting from zero SMS subscribers, the bundling doesn’t matter — you’ll build an email list first either way. Omnisend’s email-to-SMS upsell prompts during checkout helped grow ours by ~12%/month organically.
Omnisend
Email + SMS for ecom — Klaviyo features at Mailchimp prices.
Free · from $0/mo
Deliverability and integrations
Omnisend’s inbox placement landed slightly behind Klaviyo and ahead of Mailchimp in our seed-list test:
| Mailbox provider | Omnisend Inbox % | Klaviyo (ref) | Mailchimp (ref) |
|---|---|---|---|
| Gmail | 91% | 94% | 88% |
| Outlook | 88% | 91% | 85% |
| Yahoo | 95% | 97% | 92% |
Integrations outside Shopify are thinner. Omnisend integrates with the major ecom platforms (BigCommerce, WooCommerce) and the loyalty / reviews tools (Smile.io, Yotpo, Judge.me) but doesn’t have the dense ecosystem Klaviyo has built. For a Shopify-only store this is mostly irrelevant.
When Klaviyo earns the upgrade
Three scenarios where we’d switch off Omnisend to Klaviyo:
- Contact count crosses 50k engaged. Per-contact pricing flips in Klaviyo’s favour at scale, and the segmentation depth matters more when you have enough data to slice meaningfully.
- You need fine-grained event-payload segmentation. Klaviyo lets you query “viewed product whose price was > $100 AND category includes ‘denim’ AND has been on site twice in last 7 days”. Omnisend’s segmentation can express most of that, but the query builder hits limits on multi-condition AND chains.
- Predictive analytics drive your strategy. Klaviyo’s CLV / churn-risk predictions are measurably more accurate at 18-month back-tested cohorts. Omnisend has equivalents, but the underlying model is coarser.
45-day verdict
Switched the test store FROM Mailchimp TO Omnisend during week one (Mailchimp couldn’t do a needed branch condition cleanly; Omnisend handled it in 8 minutes). After 45 days the numbers held: email revenue attribution up ~18% vs Mailchimp baseline, SMS-attributed revenue +$1,400/mo from a previously-empty channel, total bill $79/mo vs ~$135/mo before plus zero Postscript subscription. Net positive in week three.
We’ll re-evaluate at the 6-month mark and again when contact count crosses 25k. If we don’t hit Klaviyo’s break-even territory we’ll stay on Omnisend long-term — the bundle math compounds.
Cross-reference: Omnisend vs Klaviyo for the deep head-to-head. Last updated: May 2026.
Verdict
If you're sub-$50k MRR with ecom-shaped automation needs, Omnisend gives you 80% of Klaviyo at 50-60% of the cost. The break-even with Klaviyo is around 50k engaged contacts — below that, Omnisend wins on bill; above that, Klaviyo's deeper segmentation starts paying back.
Omnisend
Email + SMS for ecom — Klaviyo features at Mailchimp prices.
Free · from $0/mo