Klaviyo Release Notes

See how your AI-optimized send times perform against the baseline you choose — set a fixed time or use historical patterns, then view grouped analytics across campaigns.

Customize exclusions for Product Analysis and Category Analysis separately — set independent filters in Catalog Insights so changes to one view don't affect the other.

Send SMS and RCS messages tailored to each customer's browsing, cart activity, and purchase intent — use in Added to Cart, Viewed Product, Started Checkout, Back in Stock, Price Drop, and Win Back flows with built-in A/B testing and performance reporting.

Run high-volume flows faster with a rebuilt processing engine that handles over 74,000 profiles per second.

Launch polished in-app forms faster with professionally designed templates.

Add a Custom HTML block to your sign-up forms and build tables, custom layouts, or richer formatting that standard blocks can't deliver.

Keep your Salesforce integration running without password-expiration failures — connect with OAuth 2.0 for a more reliable sync.

See exactly how each account contributes to your total spend — view per-account breakdowns, historical trends, and detailed invoices in Settings → Billing.

The analytics agent now supports up to 365 days of data, account currency, and audience analysis via natural language.

Give AI agents and developers full programmatic control of your Klaviyo account — use 260+ new MCP tools to read data, build segments, run campaigns, author flows, and manage catalogs from Claude, OpenAI, or your custom agent.

Get higher-quality campaigns from Composer — it now asks follow-up questions when your prompt needs more detail.

Deliver consistent localized experiences across your storefront, marketing, and service — sync profile locale data from Klaviyo to Shopify in your integration settings.

Get flow recommendations based on what actually works across 196,000 brands — use Flows Analyst to audit your welcome, browse abandonment, cart abandonment, and winback flows against top-performing benchmarks.

Build segments faster with natural language prompts — describe your target audience in plain English and preview the draft segment before saving.

Use content A/B testing and personalized send time together in the same campaign to test different message content while still delivering at each recipient's optimal time.