How much does Attentive cost vs Klaviyo for SMS?

Attentive's pricing is custom/enterprise-focused — typically $400-1,000+/month for small-mid brands, with annual contracts. Klaviyo SMS starts at around $0.01/SMS sent on top of their email plan, making it more accessible for smaller brands. At 10,000 SMS/month, Klaviyo costs roughly $100/month for SMS alone; Attentive's minimums can be significantly higher.

Can you use Klaviyo for SMS without email?

Yes, Klaviyo supports SMS-only accounts, but it's not the most cost-efficient approach. Klaviyo's value proposition is the combined email + SMS platform with unified customer profiles, flows, and analytics. If you only want SMS, Attentive or Postscript are purpose-built and may be better fits.

Comparison·April 26, 2026·8 min read

Klaviyo vs Attentive 2026: SMS & Email Marketing for eCommerce

Q: Is Klaviyo or Attentive better for SMS?

Attentive is widely considered the stronger pure SMS platform. It was built SMS-first, offers higher message deliverability, and has more advanced subscriber collection tools (two-tap mobile sign-up, legal compliance automation). Klaviyo's SMS is strong but secondary to email — it wins for brands that want one tool for both channels.

Q: Which platform has better Shopify integration?

Both have excellent Shopify integration. Klaviyo is the most widely used email/SMS platform on Shopify, with native integration for abandoned cart, browse abandonment, post-purchase, and VIP flows. Attentive's Shopify integration is equally strong for SMS — real-time behavioral triggers, product data sync, and revenue attribution. The difference is mostly UI preference.

Klaviyo dominates eCommerce email. Attentive dominates SMS. Now that both do both — which one drives more revenue for your DTC brand in 2026?

✅ CHOOSE KLAVIYO IF…

• You want email + SMS from one platform
• You're already using Klaviyo email (adding SMS is frictionless)
• You need best-in-class predictive analytics (CLV, churn risk)
• You're a smaller brand that needs month-to-month pricing
• You want the most mature flow builder in the industry

✅ CHOOSE ATTENTIVE IF…

• SMS is your primary growth channel
• You want the highest SMS subscriber conversion rates
• Legal/compliance automation is a priority
• You have budget for a dedicated SMS platform (and use another tool for email)
• You're scaling a high-volume DTC brand ($1M+ revenue)

Full Feature Comparison

Feature	Klaviyo	Attentive
Primary Channel	Email + SMS (unified)	SMS-first (email added 2023)
Starting Price	Free email → SMS from ~$0.01/msg	Custom quote (typically $400+/mo)
Contract	Monthly plans available	Annual contract typically required
Shopify Integration	✅ Native, #1 on Shopify App Store	✅ Native, top-rated
Subscriber Collection	Pop-ups, embedded forms, keyword opt-in	Two-tap mobile sign-up (higher conversion), keyword opt-in
Flows / Automations	✅ Best-in-class visual flow builder	✅ Strong, SMS-optimized journeys
Segmentation	✅ Deep behavioral + predictive	✅ Strong behavioral segmentation
Email + SMS Unified	✅ Same platform, same flows	⚠️ Email added later — not as mature as Klaviyo email
Deliverability	✅ Strong (both channels)	✅ Excellent SMS deliverability (SMS-focused infrastructure)
TCPA Compliance	✅ Automated opt-out, quiet hours	✅ Best-in-class legal automation
A/B Testing	✅ Email + SMS A/B flows	✅ SMS message A/B testing
Revenue Attribution	✅ Last-touch, multi-touch	✅ Detailed SMS revenue attribution
Predictive Analytics	✅ CLV, churn risk, next-order date	⚠️ More limited predictive data
API / Custom Integrations	✅ Full REST API	✅ API available
Support	Email, chat (phone on higher plans)	Dedicated CSM on most plans
Best For	Brands wanting email + SMS in one tool	DTC brands prioritizing SMS-first growth

SMS Subscriber Collection: The Real Differentiator

The biggest practical difference between Klaviyo and Attentive isn't features — it's how well they convert anonymous visitors into SMS subscribers.

Klaviyo Subscriber Collection

• Pop-up forms with SMS + email capture
• Embedded signup forms
• Keyword opt-in (text JOIN to 12345)
• Checkout opt-in integration
• Flyout banners, teaser bars
Industry-average conversion rates

Attentive Subscriber Collection

• Two-tap mobile sign-up (pre-fills phone number)
• Same pop-up and form types as Klaviyo
• Advanced A/B testing on sign-up unit design
• Automated legal compliance in forms
• Creative studio for sign-up unit design
Attentive reports 3-5x higher SMS conversion vs industry average

Why it matters: A 1% vs 3% subscriber conversion rate on 100,000 monthly visitors means 1,000 vs 3,000 new SMS subscribers/month. At a 10% conversion rate per campaign and $50 AOV, that's $5,000 vs $15,000 in monthly campaign revenue from the same traffic.

Pricing Reality Check

Klaviyo Pricing

Email Free — $0/month

Up to 500 contacts, 500 SMS messages/month included

Email plans — starts at ~$45/month

Scales by contacts (10K contacts = ~$150/mo)

SMS add-on — ~$0.01/message

10,000 SMS/mo ≈ $100; 50,000 SMS/mo ≈ $400

Month-to-month available. No annual required.

Attentive Pricing

Custom enterprise pricing

Typically $400-1,000+/month minimum

Volume-based message pricing

Custom rates based on message volume and brand size

Dedicated CSM included

Most plans include dedicated customer success support

Annual contracts typically required. Contact sales for quote.

Which Platform Wins by Use Case

Brand new to SMS marketing

→ Klaviyo

Lower cost of entry, month-to-month, email + SMS from day one.

Already on Klaviyo email

→ Klaviyo

Adding SMS to existing Klaviyo account takes minutes. Unified flows, segments, and reporting.

DTC brand scaling fast ($2M+ GMV)

→ Attentive

Higher SMS conversion rates + dedicated support team = measurable revenue lift at scale.

Email-first strategy, SMS secondary

→ Klaviyo

Don't pay for an SMS-specialist platform if email drives 80% of your revenue.

SMS as primary revenue driver

→ Attentive

Purpose-built for SMS-first brands. Two-tap mobile opt-in alone can 2-3x your subscriber growth.

Tight budget, early-stage brand

→ Klaviyo

Free tier, no annual contract, add SMS for as little as $100/month.

FAQ

Is Klaviyo or Attentive better for SMS?

Attentive is generally considered the stronger pure-SMS platform — it was built SMS-first and has higher subscriber conversion rates. Klaviyo SMS is excellent but was added to a primarily email platform. Choose Attentive if SMS is your primary revenue channel; choose Klaviyo if you want email + SMS unified.

How much does Attentive cost vs Klaviyo?

Klaviyo is more accessible: free up to 500 contacts, SMS add-on at ~$0.01/message. Attentive requires a custom quote and typically starts at $400-1,000+/month with annual contracts. Klaviyo is better for brands under $1M GMV; Attentive ROI becomes clearer at $2M+ where higher SMS conversion rates compound significantly.

Can Klaviyo do everything Attentive does?

For most brands, yes. Both platforms handle SMS campaigns, automated flows (abandoned cart, post-purchase, win-back), subscriber collection, A/B testing, and Shopify integration. Where Attentive distinctly wins: mobile-first two-tap sign-up, compliance automation depth, and dedicated SMS expertise from the CSM team.

Which platform has better Shopify integration?

Both are excellent. Klaviyo is the most-installed email/SMS app on Shopify's App Store. Attentive's Shopify integration is equally strong for SMS — real-time event triggers, product catalog sync, and attribution tracking. The difference comes down to UX preference and channel prioritization.

Ready to pick your eCommerce SMS platform?

See full platform reviews and compare all eCommerce SMS options.

Klaviyo Full Review →Attentive Full Review →Best for Ecommerce →