Klaviyo Review

Klaviyo is a B2C ecommerce marketing platform that sends SMS, MMS, RCS and email through campaigns and flows. Public SMS pricing is account-gated; the permanent free plan includes $5 of mobile messages per month, and the public calculator starts at $15 for 1,000 messages per month as of 2026-09-09.

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Klaviyo pricing

Klaviyo does not publish a per-message SMS rate. Since 13 July 2026, the exact mobile messaging rate card is available only inside a logged-in account: Klaviyo’s help article states that account holders must go to Settings > Billing > Account Usage > View Text Message rates.

The public pricing figures above were captured on 2026-09-09. Klaviyo states it added more than 70 new plan tiers, but does not publish those tier prices publicly. Carrier fees are bundled into the plan rate.

Klaviyo pricing page, captured through a US proxy, September 9, 2026.

Klaviyo features

Klaviyo supports two-way messaging, MMS on US numbers, and toll-free and short code sending. The Campaigns API supports email, SMS and push notification campaigns. Klaviyo lists 350 integrations, including Shopify, Salesforce Commerce Cloud, WooCommerce, Magento, BigCommerce, Wix, ChatGPT, Claude, Meta, Snowflake, BigQuery and Azure.

Klaviyo reliability and compliance

Klaviyo does not publish an uptime percentage or service-level agreement. Klaviyo’s Terms of Service, clause 3.3, states that access to the services may be suspended for the duration of scheduled or unscheduled downtime. Checked 2026-09-09.

Klaviyo does not name carrier routes. Its trust page identifies Infobip and Twilio as communications services providers and SendGrid for email delivery.

Klaviyo publishes ISO 27001 and ISO 27017 badges, plus PCI DSS, GDPR and CCPA references, on its trust center. Klaviyo states it undergoes annual third-party audits against standards such as SOC 2 and ISO 27001, but does not publish a held SOC 2 report or an auditor. HIPAA support is not published.

Toll-free verification is automatic during SMS setup and typically takes 2 to 5 business days. A new US short code takes 8 to 12 weeks, and migrating an existing one takes 4 to 6 weeks. Short codes are billed as a separate add-on on a paid plan. Klaviyo does not publish 10DLC registration fees or a direct 10DLC compliance statement; its US number types are toll-free and short code only, so a long-code 10DLC path does not appear to apply.

Klaviyo support

Klaviyo offers email support 24/7 and chat support 24/5, with weekend and holiday hours varying by plan. Free accounts have email support for the first 60 days only. Paid plans add one-to-one onboarding, deliverability and compliance experts, and customer success management.

There is no public US support phone number; the contact page routes to account login. Documentation depth is strong: the developer portal includes a public API reference with per-endpoint rate limits, a Postman workspace, SDKs, and a help center where one SMS search returned 521 articles.

Klaviyo alternatives

Attentive is an SMS marketing platform positioned toward higher-volume ecommerce brands with dedicated account strategists and an enterprise sales-led onboarding model, unlike Klaviyo’s self-serve free-plan-first approach.

Postscript is built exclusively for Shopify merchants with native Shopify checkout and subscription integrations, a narrower platform focus than Klaviyo’s 350-plus integration list across Shopify, BigCommerce, Magento and WooCommerce.

Omnisend unifies email, SMS and push inside one automation workflow builder aimed at smaller ecommerce merchants, marketed as a lower-cost entry point than Klaviyo’s prepaid Mobile Messaging plans.

Klaviyo verdict

Pros:

• Permanent free plan: up to 250 active profiles, 500 email sends per month and $5 of mobile messages per month.
• Carrier fees are bundled, with no separate carrier fee line items on invoices.
• Toll-free numbers, branded sender IDs and long codes are included free of charge, with toll-free verification typically taking 2 to 5 business days.
• Deep developer documentation: public API reference, Postman workspace and SDKs.
• 350 integrations, including Shopify, Salesforce Commerce Cloud, WooCommerce and BigCommerce.

Cons:

• No public per-message SMS rate: the rate card is account-gated since 13 July 2026.
• Trustpilot score of 1.7 out of 5 from 369 reviews as of 2026-09-09, with customer support the most-named complaint.
• Free-plan email support ends after 60 days and there is no public US phone number.
• No published uptime percentage or SLA; Terms of Service clause 3.3 disclaims availability.
• US short codes take 8 to 12 weeks to provision and are a separate paid add-on.

Klaviyo suits ecommerce and DTC brands that want SMS, MMS, RCS and email automated together in one platform, especially Shopify, BigCommerce, WooCommerce or Magento stores using its 350-plus integrations. It does not suit buyers who need a transactional API-first SMS gateway, HIPAA support, a held SOC 2 report, an exact per-message quote before signup, or live phone support.

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Frequently asked questions