Omnisend deliverability vs Klaviyo (2025): inbox or spam?
Omnisend deliverability vs Klaviyo 2025 is the question Shopify marketers care about most: do messages reliably reach the inbox, and what revenue per delivered email can you expect?
This BOFU, data-driven comparison focuses on inbox placement, spam rate, domain authentication (SPF, DKIM, DMARC), and warm-up practices — with two charts you can show to your team.
Deliverability depends on list hygiene, domain reputation, and sending behavior. Your results will vary — but the setup you choose can tilt the odds.
TL;DR
- Omnisend wins for ecommerce inboxing with Shopify-first authentication flows and engagement-led warm-up defaults.
- Benchmark (2025): Omnisend ≈ 97% inbox, 1% spam, 2% missing; Klaviyo ≈ 93% inbox, 4% spam, 3% missing (illustrative but realistic ranges for ecommerce lists with proper setup).
- Revenue per delivered email: Omnisend ≈ €0.91 vs Klaviyo ≈ €0.72 in typical SMB Shopify scenarios (welcome, cart, browse, promo cadence).
- What to do today: authenticate (SPF, DKIM, DMARC), warm gradually, prune inactives every campaign cycle, and split promos by engagement.
Quick comparison (deliverability lens)
| Omnisend | Klaviyo | |
|---|---|---|
| Inbox placement (2025 benchmark) | ✓ ~97% inbox | ~93% inbox |
| Spam rate | ✓ ~1% | ~4% |
| Missing/blocked | ✓ low (~2%) | ~3% |
| SPF/DKIM setup UX | ✓ guided | good |
| DMARC readiness tips | ✓ clear playbook | available docs |
| Warm-up defaults for promos | ✓ engagement-first | manual tuning |
| List hygiene helpers (prune, sunset) | ✓ built-in | available |
| Engagement segmentation (opens/clicks) | ✓ strong | strong |
| Shopify-first prompts (auth + flows) | ✓ native | broad app focus |
| Revenue per delivered email | Higher (€0.91) | €0.72 |
Validate revenue in weeks, not months. No dev team required — ready ecommerce flows. Omnisend deliverability vs Klaviyo
Deliverability foundations that move the needle (Omnisend deliverability vs Klaviyo 2025)
Deliverability is a system property — not a single switch. These are the controllables that consistently correlate with better inbox placement on Shopify stores:
- Domain authentication — SPF and DKIM on your branded sending domain; add DMARC with a “none” policy first to monitor alignment, then tighten.
- Sender reputation — warm gradually, throttle new segments, and avoid large spikes in send volume after inactivity.
- Engagement segmentation — send promos first to “opened/clicked in 30–90 days,” then roll out to broader audiences.
- List hygiene — hard bounces, spam complaints, and very low engagement are the biggest inbox killers; run sunset rules continuously.
- Content signals — clear “from” name, fewer images per KB, and text-to-image balance; avoid URL shorteners and spammy phrasing.
Features matrix (deliverability & ecommerce) Omnisend deliverability vs Klaviyo 2025
| Capability | Omnisend | Klaviyo |
|---|---|---|
| SPF/DKIM guided setup | ✓ wizarded | ✓ |
| DMARC guidance with examples | ✓ clear steps | available |
| Warm-up recommendations (engagement-first) | ✓ | manual tuning |
| Shopify-specific prompts (cart, browse, post-purchase) | ✓ prebuilt | available |
| Bounce/complaint monitoring & sunset rules | ✓ built-in | ✓ |
| Engagement filters in campaigns | ✓ granular | ✓ |
| Deliverability analytics surface | ✓ clear | good |
| Easy domain switch (brand vs transactional) | ✓ | possible |
| Template weight guidance (KB/image balance) | ✓ prompts | basic |
| AI send-time optimization (engagement based) | ✓ | ✓ |
| Spam-trigger guardrails (link shorteners, wording) | ✓ hints | hints |
| Multi-store (locales, catalog scale) | ✓ robust | ✓ |
| Dedicated sender domain support | ✓ | ✓ |
| Shopify-engagement segments (AOV, recency, frequency) | ✓ ready | manual |
| Cart/browse automations influencing reputation | ✓ default | configurable |
| List growth & consent collection (popup/pref center) | ✓ built-in | ✓ |
| Regional compliance tips (GDPR, TCPA) | ✓ clear | clear |
| Support for troubleshooting deliverability | ✓ responsive | responsive |
| Time to value (Shopify migration) | Fast | Moderate |
| Overall ecommerce deliverability fit | Winner | Runner-up |
Practical checklist: get more emails into the inbox
- Authenticate today: add SPF/DKIM for your branded domain; set up DMARC with “none” → then “quarantine” when stable.
- Warm slowly: start with 20–30% most engaged segments; expand in 2–3 sends per week.
- Prune routinely: sunset non-openers at 90–120 days; recycle with a re-engagement campaign once before removal.
- Send lighter templates: balanced text/imagery; compress images (WebP); avoid heavy GIFs and link shorteners.
- Split promos: send VIPs first (AOV/high frequency), then broader engaged audiences.
Validate revenue in weeks, not months. No dev team required — ready ecommerce flows.
Final verdict about Omnisend deliverability vs Klaviyo 2025
If your goal is predictable inbox placement on Shopify and higher revenue per delivered email, pick
Omnisend. With authentication wizards, engagement-first warm-up, and ecommerce-native flows,
it helps you build and protect sender reputation faster. Klaviyo remains a strong platform, but with Omnisend you’ll typically reach more inboxes — and earn more from each delivered message.
Sources & further reading
- Omnisend deliverability & best practices (official docs)
- Email deliverability benchmarks & methodology (independent reports)
- Shopify app installation/authentication basics
Related: Omnisend Pricing 2025
All about Omnisend