software
Klaviyo vs Omnisend 2026: Email & SMS Comparison
Klaviyo is built on unified customer data depth enabling advanced segmentation and personalization across all channels, while Omnisend prioritizes guided ecommerce workflows with affordable omnichannel execution. Klaviyo wins for data-driven brands needing sophisticated behavioral triggers; Omnisend wins for cost-conscious stores wanting faster setup.
Klaviyo
Ecommerce-focused email and SMS marketing platform with advanced segmentation and predictive analytics for online retailers.
Data-driven ecommerce brands, Shopify Plus stores, and marketers prioritizing deep segmentation and personalization over cost
Score67%
VS
O
Omnisend
Budget-friendly omnichannel marketing platform combining email, SMS, and push notifications.
Small-to-mid-sized ecommerce stores, budget-conscious teams, and businesses prioritizing speed-to-launch over advanced data infrastructure
Score67%
150 attributes7 differences12 pros/cons
Quick Answer
AI SummaryKlaviyo is built on unified customer data depth enabling advanced segmentation and personalization across all channels, while Omnisend prioritizes guided ecommerce workflows with affordable omnichannel execution. Klaviyo wins for data-driven brands needing sophisticated behavioral triggers; Omnisend wins for cost-conscious stores wanting faster setup.
Our Verdict
AI-assistedChoose Klaviyo if your brand needs sophisticated behavioral segmentation, advanced personalization across channels, and plans to invest in deep customer data infrastructure—ideal for mid-to-large ecommerce companies with mature marketing teams. Choose Omnisend if you want multichannel marketing (email, SMS, push) at a lower cost, need faster time-to-value with guided workflows, and prefer pre-built integrations over extensive customization—ideal for small-to-mid-sized stores bootstrapping their marketing stack.
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Klaviyo
9/10
Omnisend
6/10
O
Choose Klaviyo if
Best pickData-driven ecommerce brands, Shopify Plus stores, and marketers prioritizing deep segmentation and personalization over cost
O
Choose Omnisend if
Small-to-mid-sized ecommerce stores, budget-conscious teams, and businesses prioritizing speed-to-launch over advanced data infrastructure
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Key Differences at a Glance
- Core Product Architecture:Unified customer data platform + marketing engine vs Ecommerce-first workflow + omnichannel bundling
- Free Plan SMS Messaging:✓ Omnisend wins(Unlimited SMS included free vs Not included in free tier)
- Free Plan Segmentation:✓ Omnisend wins(Unlimited segments included free vs Basic email features only)
Key Facts & Figures
78 numeric metrics compared
| Metric | Klaviyo | Omnisend | Ratio |
|---|---|---|---|
| Starting Price (Entry Tier)(USD/month) | $20/month | — | — |
| Cost at 5,000 Contacts/Profiles(USD/month) | $100/month | — | — |
| Cost at 50,000 Contacts/Profiles(USD/month) | $720/month | — | — |
| Monthly Email Send Limit (Entry Plan)(emails/month) | 5,000+ | — | — |
| Pre-Built Integrations(count) | Extensive custom via API | 130+ pre-built | — |
| Average eCommerce Email Revenue Per Send(USD) | $72 | — | — |
| Starting Price (Email Only)(USD/month) | $20/month (500 contacts) | — | — |
| eCommerce Email Automation ROI(%) | 4,200% ROI (industry average) | — | — |
| Segmentation Filter Count(filters) | 45+ filters | — | — |
| Client Revenue Tracked (Lifetime)(million USD) | $50M+ | — | — |
| Channels Supported(count) | 3 (Email, SMS, WhatsApp) | — | — |
| Platform Rating(out of 5) | 4.7/5 | — | — |
| Typical Onboarding Time(weeks) | 7-14 | — | — |
| eCommerce Revenue Attribution(USD per email) | $72 per email sent | — | — |
| eCommerce Platform ROI(%) | Industry average 4,200% | — | — |
| Starting Monthly Price(USD) | $20+ (usage-based) | — | — |
| Email Deliverability Rate(%) | 99.2% | — | — |
| API Rate Limit(requests per second) | 10,000 | — | — |
| Price at 50,000 Contacts(USD) | $1,250 | — | — |
| SMS Cost Per Message(USD) | $0.01-0.03 (add-on) | — | — |
| Ease of Use Score(/10) | 6.5 | — | — |
| Starting Price(USD/month) | $20 | — | — |
| Email Integrations Count(integrations) | 400+ | — | — |
| API Rate Limits(requests/minute) | 60 | — | — |
| SMS Deliverability Rate(%) | 98% | — | — |
| Starting Monthly Cost(USD) | $20-45 | — | — |
| Free Email Monthly Limit(emails) | None | — | — |
| E-commerce Templates Available(count) | 200+ Shopify-optimized | — | — |
| Open Rate Improvement (avg)(percent increase) | 10-15% with predictive send time | — | — |
| Deliverability Rating(percent) | 99.1% | — | — |
| Base Monthly Cost(USD) | $20 | — | — |
| Email Template Library(templates) | 500+ | — | — |
| Lead Scoring Accuracy(percent) | 35% | — | — |
| SMS Open Rate(percent) | 98% | — | — |
| Free Plan Contact Limit(contacts) | 500 | — | — |
| Native E-commerce Integrations(integrations) | 200+ | — | — |
| Setup Time (Minutes)(minutes) | 30-45 | — | — |
| Automation Workflows (Free Tier)(workflows) | 5 active automations | — | — |
| Available Template Library(templates) | 150+ with AI generation | — | — |
| SMS Average Revenue Per Message(USD) | $0.45 | — | — |
| Base Monthly Price(USD) | $20 (for 500 contacts) | — | — |
| Email Templates Available(templates) | 500+ | — | — |
| Average Implementation Time(hours) | 1-2 weeks (visual setup) | — | — |
| API Rate Limit (Standard Plan)(calls/24hrs) | 500 | — | — |
| Maximum Contact Database Size(contacts) | 100+ million | — | — |
| Starting Price (Monthly)(USD) | $20 | $25/month | |
| Mid-Tier Price (5K contacts/subscribers)(USD) | $320 | — | — |
| Enterprise Price (100K+ contacts/subscribers)(USD) | $1,200+ | — | — |
| Pre-built Automation Templates(count) | 250+ | — | — |
| Starting Monthly Price(USD) | $20 | — | — |
| SMS Campaign Performance (CTR)(%) | 35-40% | — | — |
| Free Trial Length(days) | 14 | — | — |
| Entry-Level Monthly Price(USD) | $20 | — | — |
| API Rate Limit(requests/minute) | 300 | — | — |
| Pre-built E-commerce Integrations(count) | 150+ | — | — |
| Monthly Cost at 1M Contacts(USD) | $1,350 | — | — |
| Base Plan Monthly Cost(USD) | $20 | $20 | |
| Email Deliverability Rate(%) | 98.5% | 97.2% | |
| Contact Limit (Free Plan)(contacts) | 500 | 500 | |
| Price Per SMS (Add-on/Included)(USD) | $0.01-0.015 (add-on) | Included | |
| Native Integrations(count) | 100+ | 60+ | |
| Mid-Tier Plan Monthly Cost (10k contacts)(USD) | $45 | $99 | |
| Monthly Starting Price(USD) | $20 | — | — |
| Native Ecommerce Integrations(integrations) | 200+ | — | — |
| Behavioral Automation Triggers(trigger types) | 100+ | — | — |
| Base Monthly Price (500 contacts)(USD) | $20 | — | — |
| Direct Platform Integrations(integrations) | 150+ | — | — |
| Implementation Time (Average)(days) | 14-21 days | — | — |
| Customer Satisfaction Rating(out of 5) | 4.5/5 | — | — |
| SMS Marketing Cost(USD/month) | Included in base | — | — |
| Contact Limit (Entry Plan)(contacts) | 500 | — | — |
| G2 User Rating(/5) | 4.7 | — | — |
| Review Count (G2)(reviews) | 3,100+ | — | — |
| Automation Workflows (Pre-built)(templates) | 400+ | — | — |
| Free Tier SMS Messages(messages/month) | 0 SMS (SMS is paid-only) | 0 SMS (SMS is paid-only) | |
| Pre-built Email Templates(count) | 120+ templates | 120+ templates | |
| Customer Support Response Time(hours) | 2-4 hours average | 2-4 hours average | |
| Monthly Contact Limit (Free Plan)(contacts) | 500 contacts (Free plan available) | 500 contacts (Free plan available) |
Sourced from publicly available data ·
Key Differences
7 attributes compared head-to-head
Omnisend leads1 tie
O
4OmnisendKlaviyo
Attribute
Omnisend
- Unified customer data platform + marketing engineCore Product ArchitectureEcommerce-first workflow + omnichannel bundling
- Not included in free tierFree Plan SMS MessagingUnlimited SMS included free(winner)
- Basic email features onlyFree Plan SegmentationUnlimited segments included free(winner)
- Advanced behavioral graph with real-time customer profiles(winner)Segmentation DepthCompetent but simpler segmentation logic
- Extensive custom integrations via APIThird-Party Integrations130+ pre-built integrations + flexible APIs(winner)
- Requires more configuration decisionsSetup Speed for New UsersGuided ecommerce workflows reduce decision load(winner)
- Builds real-time behavioral graphs continuously(winner)Customer Data RichnessTracks behavioral data but with less depth
- Core Product Architecture
Klaviyo
Unified customer data platform + marketing engine
Omnisend
Ecommerce-first workflow + omnichannel bundling
- Free Plan SMS Messaging
Klaviyo
Not included in free tier
Omnisend
Unlimited SMS included free(winner)
- Free Plan Segmentation
Klaviyo
Basic email features only
Omnisend
Unlimited segments included free(winner)
- Segmentation Depth
Klaviyo
Advanced behavioral graph with real-time customer profiles(winner)
Omnisend
Competent but simpler segmentation logic
- Third-Party Integrations
Klaviyo
Extensive custom integrations via API
Omnisend
130+ pre-built integrations + flexible APIs(winner)
- Setup Speed for New Users
Klaviyo
Requires more configuration decisions
Omnisend
Guided ecommerce workflows reduce decision load(winner)
- Customer Data Richness
Klaviyo
Builds real-time behavioral graphs continuously(winner)
Omnisend
Tracks behavioral data but with less depth
Full Comparison
| Attribute | Klaviyo | Omnisend |
|---|---|---|
| Starting Price (Entry Tier)(USD/month) | $20/month | — |
| Cost at 5,000 Contacts/Profiles(USD/month) | $100/month | — |
| Cost at 50,000 Contacts/Profiles(USD/month) | $720/month | — |
| Starting Price (Email Only)(USD/month) | $20/month (500 contacts) | — |
| Price at 100K Contacts(USD/month) | Varies by plan features | — |
Show 24 more attributesPricing Structure Active profiles (contacts with behavior) — Free Contact Storage(contacts) Limited (plan-dependent) — Starting Monthly Price(USD) $20+ (usage-based) — Price at 50,000 Contacts(USD) $1,250 — Starting Price(USD/month) $20 — Starting Monthly Cost(USD) $20-45 — Free Email Monthly Limit(emails) None — Base Monthly Cost(USD) $20 — Free Tier Subscriber Limit(subscribers) None (paid only) — Base Monthly Price(USD) $20 (for 500 contacts) — Starting Price (Monthly)(USD) $20 $25/month Mid-Tier Price (5K contacts/subscribers)(USD) $320 — Enterprise Price (100K+ contacts/subscribers)(USD) $1,200+ — Starting Monthly Price(USD) $20 — Entry-Level Monthly Price(USD) $20 — Monthly Cost at 1M Contacts(USD) $1,350 — Base Plan Monthly Cost(USD) $20 $20 Price Per SMS (Add-on/Included)(USD) $0.01-0.015 (add-on) Included Mid-Tier Plan Monthly Cost (10k contacts)(USD) $45 $99 Monthly Starting Price(USD) $20 — Free Tier Monthly Email Sends(emails/day) Unlimited — Base Monthly Price (500 contacts)(USD) $20 — SMS Marketing Cost(USD/month) Included in base — Monthly Contact Limit (Free Plan)(contacts) 500 contacts (Free plan available) — | ||
| Free Plan Email Features | All email features included | — |
| Email Template Design Options(variety level) | eCommerce-optimized templates | — |
| Segmentation Capabilities(trigger types) | Advanced behavior-led segmentation | — |
| Customer Data Integration(depth level) | Unified customer data foundation | — |
| Pre-Built Integrations(count) | Extensive custom via API | 130+ pre-built |
Show 50 more attributesEmail Marketing Integration Native email + SMS + pop-ups — Campaign Scheduling Smart scheduling with AI optimization — Segmentation Capability Advanced behavioral data segmentation — Channels Supported(count) 3 (Email, SMS, WhatsApp) — AI Features Available(count) Personalized send time optimization — Customer Data Platform Built-in CDP as core foundation — Automation Capabilities(templates) Unlimited triggered sequences with advanced conditional logic — Channels Supported(count) Email, SMS, Web Push, Forms — Segmentation Capabilities Behavioral, predictive, e-commerce segments, custom attributes — Automation Complexity Level Advanced multi-channel — E-commerce Integration Quality Native integration with major platforms — Personalization Capabilities AI-powered with customer data platform — Email Integrations Count(integrations) 400+ — SMS Marketing Included Yes, native SMS — Landing Page Builder(included) No, third-party required — SMS Capability(native integration) Native SMS included — E-commerce Templates Available(count) 200+ Shopify-optimized — Automation Workflow Complexity(triggers/conditions) Unlimited with predictive optimization — Email Template Library(templates) 500+ — Lead Scoring Accuracy(percent) 35% — Free Plan Contact Limit(contacts) 500 — Automation Workflows (Free Tier)(workflows) 5 active automations — Available Template Library(templates) 150+ with AI generation — SMS Channel Support(available) Yes (all plans) — Email Templates Available(templates) 500+ — Native Mobile App Push Support Web push only — CRM Deal Pipeline Features Basic customer profiles only — Lead Scoring Models(types) Basic behavioral and manual only — Account-Based Marketing Capability(capability level) Not supported — Email Channel Supported — SMS Channel Supported — Push Notifications Basic mobile only — In-App Messaging Not supported — Native SMS Marketing Yes, included with segmentation — Behavioral Automation Depth Advanced (20+ trigger types) — Contact Limit (Free Plan)(contacts) 500 500 Included Channels (Base Tier) Email only Email + SMS + Push Predictive Analytics Capability Yes (advanced) No Native Ecommerce Integrations(integrations) 200+ — Behavioral Automation Triggers(trigger types) 100+ — A/B Test Variants Supported(dimensions) Subject, content, send time, segment split — Landing Page Builder Included(boolean) Paid add-on ($0.02 per view) — Direct Platform Integrations(integrations) 150+ — Automation Workflows (Entry Plan)(workflows) Unlimited — Native CRM Features Customer profiles and purchase history only — Automation Workflows (Pre-built)(templates) 400+ — Free Tier SMS Messages(messages/month) 0 SMS (SMS is paid-only) — Pre-built Email Templates(count) 120+ templates — Automation Workflows Unlimited workflows with AI suggestions — Ecommerce-Specific Abandoned Cart Feature(availability) Advanced with AI product recommendations — | ||
| Monthly Email Send Limit (Entry Plan)(emails/month) | 5,000+ | — |
| Free Plan SMS Capability | Not included | Unlimited SMS included |
| Entry-Level Pricing Accessibility | Higher minimum investment required | More cost-effective, free plan available |
| Free Plan Segmentation Limits(segments) | Basic email features only | Unlimited segments |
| Customer Data Behavioral Depth | Real-time behavioral graphs with continuous updates | Behavioral tracking with standard segmentation |
| Omnichannel Support(channels) | Email, SMS, push, in-app, direct mail | Email, SMS, push notifications |
| Target Market Focus | Mid-to-large ecommerce, Shopify Plus, data-driven brands | Small-to-mid ecommerce, Shopify, cost-conscious teams |
| Target Business Size | SMB to Enterprise (all Shopify store sizes) | — |
| Average eCommerce Email Revenue Per Send(USD) | $72 | — |
| eCommerce Email Automation ROI(%) | 4,200% ROI (industry average) | — |
| Built-in CRM for Sales Teams | B2C customer data platform | — |
| CRM Lead Scoring Capability(null) | Behavioral purchase-event segmentation | — |
| Native SMS Channel | Included in all plans | — |
| Multi-Channel Automation Support | Email, SMS, push (native) | — |
| Segmentation Filter Count(filters) | 45+ filters | — |
| Two-Way Messaging | Limited 2-way capability | — |
| Client Revenue Tracked (Lifetime)(million USD) | $50M+ | — |
| A/B Testing | Yes, multi-channel A/B testing | — |
| Email Support Cost(USD/month) | Included (higher plans only) | — |
| Customer Support Availability(hours/day) | 24/5 email, phone 9-5 EST | — |
| Customer Support Response Time(hours) | 2-4 hours average | — |
| Setup Complexity | Steeper learning curve (data-focused) | Low (guided ecommerce workflows) |
| Setup Time (Minutes)(minutes) | 30-45 | — |
| Implementation Time (Average)(days) | 14-21 days | — |
| Platform Rating(out of 5) | 4.7/5 | — |
| AI-Powered Features(count) | Predictive send-time optimization (Q4 2025), AI-driven personalization | — |
| Deliverability Grade | Enterprise-grade, proven at scale with dedicated infrastructure | — |
| Typical Onboarding Time(weeks) | 7-14 | — |
| eCommerce Revenue Attribution(USD per email) | $72 per email sent | — |
| eCommerce Platform ROI(%) | Industry average 4,200% | — |
| Shopify Native Integration Depth(null) | Deep native with purchase-event segmentation | — |
| API Rate Limits(requests/minute) | 60 | — |
| API Rate Limit (Standard Plan)(calls/24hrs) | 500 | — |
| Multi-Channel Support | Email and SMS | — |
| Primary Geographic Strength(null) | North America eCommerce focus | — |
| Email Deliverability Rate(%) | 99.2% | — |
| SMS Deliverability Rate(%) | 98% | — |
| Open Rate Improvement (avg)(percent increase) | 10-15% with predictive send time | — |
| Deliverability Rating(percent) | 99.1% | — |
| SMS Open Rate(percent) | 98% | — |
Show 2 more attributesSMS Campaign Performance (CTR)(%) 35-40% — Email Deliverability Rate(%) 98.5% 97.2% | ||
| API Rate Limit(requests per second) | 10,000 | — |
| Mobile App Users(millions) | 150,000+ e-commerce merchants | — |
| Learning Curve(difficulty level) | 1-2 weeks | — |
| Learning Curve(difficulty rating) | 1-2 weeks | — |
| SMS Cost Per Message(USD) | $0.01-0.03 (add-on) | — |
| Ease of Use Score(/10) | 6.5 | — |
| Maximum Subscriber Limit(contacts) | Unlimited | — |
| Maximum Contacts (Affordable Tier)(contacts) | Unlimited | — |
| Maximum Contact Database Size(contacts) | 100+ million | — |
| Implementation Time(weeks) | 1-2 days | — |
| Native E-commerce Integrations(integrations) | 200+ | — |
| Shopify Integration(quality level) | Native built-in integration | — |
| Shopify Integration Depth | Native deep integration with pre-built flows | — |
| Pre-built E-commerce Integrations(count) | 150+ | — |
| SMS Average Revenue Per Message(USD) | $0.45 | — |
| Average Implementation Time(hours) | 1-2 weeks (visual setup) | — |
| Free Trial Length(days) | 14 | — |
| Pre-built Automation Templates(count) | 250+ | — |
| API Rate Limit(requests/minute) | 300 | — |
| Native Integrations(count) | 100+(winner) | 60+ |
| Customer Satisfaction Rating(out of 5) | 4.5/5 | — |
| G2 User Rating(/5) | 4.7 | — |
| Review Count (G2)(reviews) | 3,100+ | — |
| Contact Limit (Entry Plan)(contacts) | 500 | — |
KlaviyoOOmnisend
Starting Price (Entry Tier)(USD/month)
$20/month
—
Cost at 5,000 Contacts/Profiles(USD/month)
$100/month
—
Cost at 50,000 Contacts/Profiles(USD/month)
$720/month
—
Starting Price (Email Only)(USD/month)
$20/month (500 contacts)
—
Price at 100K Contacts(USD/month)
Varies by plan features
—
Show 24 more attributes
Pricing Structure
Active profiles (contacts with behavior)
—
Free Contact Storage(contacts)
Limited (plan-dependent)
—
Starting Monthly Price(USD)
$20+ (usage-based)
—
Price at 50,000 Contacts(USD)
$1,250
—
Starting Price(USD/month)
$20
—
Starting Monthly Cost(USD)
$20-45
—
Free Email Monthly Limit(emails)
None
—
Base Monthly Cost(USD)
$20
—
Free Tier Subscriber Limit(subscribers)
None (paid only)
—
Base Monthly Price(USD)
$20 (for 500 contacts)
—
Starting Price (Monthly)(USD)
$20
$25/month
Mid-Tier Price (5K contacts/subscribers)(USD)
$320
—
Enterprise Price (100K+ contacts/subscribers)(USD)
$1,200+
—
Starting Monthly Price(USD)
$20
—
Entry-Level Monthly Price(USD)
$20
—
Monthly Cost at 1M Contacts(USD)
$1,350
—
Base Plan Monthly Cost(USD)
$20
$20
Price Per SMS (Add-on/Included)(USD)
$0.01-0.015 (add-on)
Included
Mid-Tier Plan Monthly Cost (10k contacts)(USD)
$45
$99
Monthly Starting Price(USD)
$20
—
Free Tier Monthly Email Sends(emails/day)
Unlimited
—
Base Monthly Price (500 contacts)(USD)
$20
—
SMS Marketing Cost(USD/month)
Included in base
—
Monthly Contact Limit (Free Plan)(contacts)
500 contacts (Free plan available)
—
Free Plan Email Features
All email features included
—
Email Template Design Options(variety level)
eCommerce-optimized templates
—
Segmentation Capabilities(trigger types)
Advanced behavior-led segmentation
—
Customer Data Integration(depth level)
Unified customer data foundation
—
Pre-Built Integrations(count)
Extensive custom via API
130+ pre-built
Show 50 more attributes
Email Marketing Integration
Native email + SMS + pop-ups
—
Campaign Scheduling
Smart scheduling with AI optimization
—
Segmentation Capability
Advanced behavioral data segmentation
—
Channels Supported(count)
3 (Email, SMS, WhatsApp)
—
AI Features Available(count)
Personalized send time optimization
—
Customer Data Platform
Built-in CDP as core foundation
—
Automation Capabilities(templates)
Unlimited triggered sequences with advanced conditional logic
—
Channels Supported(count)
Email, SMS, Web Push, Forms
—
Segmentation Capabilities
Behavioral, predictive, e-commerce segments, custom attributes
—
Automation Complexity Level
Advanced multi-channel
—
E-commerce Integration Quality
Native integration with major platforms
—
Personalization Capabilities
AI-powered with customer data platform
—
Email Integrations Count(integrations)
400+
—
SMS Marketing Included
Yes, native SMS
—
Landing Page Builder(included)
No, third-party required
—
SMS Capability(native integration)
Native SMS included
—
E-commerce Templates Available(count)
200+ Shopify-optimized
—
Automation Workflow Complexity(triggers/conditions)
Unlimited with predictive optimization
—
Email Template Library(templates)
500+
—
Lead Scoring Accuracy(percent)
35%
—
Free Plan Contact Limit(contacts)
500
—
Automation Workflows (Free Tier)(workflows)
5 active automations
—
Available Template Library(templates)
150+ with AI generation
—
SMS Channel Support(available)
Yes (all plans)
—
Email Templates Available(templates)
500+
—
Native Mobile App Push Support
Web push only
—
CRM Deal Pipeline Features
Basic customer profiles only
—
Lead Scoring Models(types)
Basic behavioral and manual only
—
Account-Based Marketing Capability(capability level)
Not supported
—
Email Channel
Supported
—
SMS Channel
Supported
—
Push Notifications
Basic mobile only
—
In-App Messaging
Not supported
—
Native SMS Marketing
Yes, included with segmentation
—
Behavioral Automation Depth
Advanced (20+ trigger types)
—
Contact Limit (Free Plan)(contacts)
500
500
Included Channels (Base Tier)
Email only
Email + SMS + Push
Predictive Analytics Capability
Yes (advanced)
No
Native Ecommerce Integrations(integrations)
200+
—
Behavioral Automation Triggers(trigger types)
100+
—
A/B Test Variants Supported(dimensions)
Subject, content, send time, segment split
—
Landing Page Builder Included(boolean)
Paid add-on ($0.02 per view)
—
Direct Platform Integrations(integrations)
150+
—
Automation Workflows (Entry Plan)(workflows)
Unlimited
—
Native CRM Features
Customer profiles and purchase history only
—
Automation Workflows (Pre-built)(templates)
400+
—
Free Tier SMS Messages(messages/month)
0 SMS (SMS is paid-only)
—
Pre-built Email Templates(count)
120+ templates
—
Automation Workflows
Unlimited workflows with AI suggestions
—
Ecommerce-Specific Abandoned Cart Feature(availability)
Advanced with AI product recommendations
—
Monthly Email Send Limit (Entry Plan)(emails/month)
5,000+
—
Free Plan SMS Capability
Not included
Unlimited SMS included
Entry-Level Pricing Accessibility
Higher minimum investment required
More cost-effective, free plan available
Free Plan Segmentation Limits(segments)
Basic email features only
Unlimited segments
Customer Data Behavioral Depth
Real-time behavioral graphs with continuous updates
Behavioral tracking with standard segmentation
Omnichannel Support(channels)
Email, SMS, push, in-app, direct mail
Email, SMS, push notifications
Target Market Focus
Mid-to-large ecommerce, Shopify Plus, data-driven brands
Small-to-mid ecommerce, Shopify, cost-conscious teams
Target Business Size
SMB to Enterprise (all Shopify store sizes)
—
Average eCommerce Email Revenue Per Send(USD)
$72
—
eCommerce Email Automation ROI(%)
4,200% ROI (industry average)
—
Built-in CRM for Sales Teams
B2C customer data platform
—
CRM Lead Scoring Capability(null)
Behavioral purchase-event segmentation
—
Native SMS Channel
Included in all plans
—
Multi-Channel Automation Support
Email, SMS, push (native)
—
Segmentation Filter Count(filters)
45+ filters
—
Two-Way Messaging
Limited 2-way capability
—
Client Revenue Tracked (Lifetime)(million USD)
$50M+
—
A/B Testing
Yes, multi-channel A/B testing
—
Email Support Cost(USD/month)
Included (higher plans only)
—
Customer Support Availability(hours/day)
24/5 email, phone 9-5 EST
—
Customer Support Response Time(hours)
2-4 hours average
—
Setup Complexity
Steeper learning curve (data-focused)
Low (guided ecommerce workflows)
Setup Time (Minutes)(minutes)
30-45
—
Implementation Time (Average)(days)
14-21 days
—
Platform Rating(out of 5)
4.7/5
—
AI-Powered Features(count)
Predictive send-time optimization (Q4 2025), AI-driven personalization
—
Deliverability Grade
Enterprise-grade, proven at scale with dedicated infrastructure
—
Typical Onboarding Time(weeks)
7-14
—
eCommerce Revenue Attribution(USD per email)
$72 per email sent
—
eCommerce Platform ROI(%)
Industry average 4,200%
—
Shopify Native Integration Depth(null)
Deep native with purchase-event segmentation
—
API Rate Limits(requests/minute)
60
—
API Rate Limit (Standard Plan)(calls/24hrs)
500
—
Multi-Channel Support
Email and SMS
—
Primary Geographic Strength(null)
North America eCommerce focus
—
Email Deliverability Rate(%)
99.2%
—
SMS Deliverability Rate(%)
98%
—
Open Rate Improvement (avg)(percent increase)
10-15% with predictive send time
—
Deliverability Rating(percent)
99.1%
—
SMS Open Rate(percent)
98%
—
Show 2 more attributes
SMS Campaign Performance (CTR)(%)
35-40%
—
Email Deliverability Rate(%)
98.5%
97.2%
API Rate Limit(requests per second)
10,000
—
Mobile App Users(millions)
150,000+ e-commerce merchants
—
Learning Curve(difficulty level)
1-2 weeks
—
Learning Curve(difficulty rating)
1-2 weeks
—
SMS Cost Per Message(USD)
$0.01-0.03 (add-on)
—
Ease of Use Score(/10)
6.5
—
Maximum Subscriber Limit(contacts)
Unlimited
—
Maximum Contacts (Affordable Tier)(contacts)
Unlimited
—
Maximum Contact Database Size(contacts)
100+ million
—
Implementation Time(weeks)
1-2 days
—
Native E-commerce Integrations(integrations)
200+
—
Shopify Integration(quality level)
Native built-in integration
—
Shopify Integration Depth
Native deep integration with pre-built flows
—
Pre-built E-commerce Integrations(count)
150+
—
SMS Average Revenue Per Message(USD)
$0.45
—
Average Implementation Time(hours)
1-2 weeks (visual setup)
—
Free Trial Length(days)
14
—
Pre-built Automation Templates(count)
250+
—
API Rate Limit(requests/minute)
300
—
Native Integrations(count)
100+
60+
Customer Satisfaction Rating(out of 5)
4.5/5
—
G2 User Rating(/5)
4.7
—
Review Count (G2)(reviews)
3,100+
—
Contact Limit (Entry Plan)(contacts)
500
—
Pros & Cons
8 pros·4 cons across both
O
Klaviyo
+4-2
Pros
- Real-time behavioral customer graphs enabling sophisticated segmentation
- Advanced personalization and dynamic content capabilities across all channels
- Extensive API and custom integration flexibility for complex tech stacks
- Industry-leading customer data unification for lifecycle marketing
Cons
- Higher pricing tier requiring significant investment for small businesses
- Steeper learning curve with more configuration decisions upfront
O
Omnisend
+4-2
Pros
- Unlimited SMS messaging and unlimited segments included in free plan
- 130+ pre-built integrations covering most ecommerce tech stacks
- Faster setup with guided ecommerce workflows reducing configuration complexity
- Significantly lower cost structure, especially for small-to-mid-sized stores
Cons
- Less sophisticated behavioral segmentation compared to Klaviyo's real-time graphs
- Smaller ecosystem of advanced customization options versus enterprise platforms
Frequently Asked Questions
5 questions
Omnisend is significantly more cost-effective for small businesses. Its free plan includes unlimited SMS messaging and unlimited segments, while Klaviyo's free plan is limited to basic email features with no SMS. For stores under $50K monthly revenue, Omnisend's lower pricing tier makes it the better financial choice.
Resources & Learn More
Curated sources to dive deeper
Where to Buy
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Wikipedia
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