The 4.0.0 release unlocks smarter automation, deeper audience insights, and a more polished campaign experience—plus the full rollout of Klaviyo Smart Mailers.
Key Features & Enhancements
Klaviyo Smart Mailers (Official Launch) – Automatically trigger direct mail based on Klaviyo flows, filters, and segments—now live for all users.
Smarter CLV Modeling – Improved Customer Lifetime Value calculations using dynamic, real-time data for better decision-making.
Faster Audience Updates – Major speed and reliability improvements to how audience data is processed and synced.
Enhanced Design Experience – Ability to choose custom QR code colours when uploading a design
Additional Improvements
Improved Profile Accuracy – Smarter name handling and data hygiene for better personalization.
UI & UX Polish – Refined campaign creation flows, fixed edge cases, and upgraded filters and sliders.
Infrastructure Upgrades – Faster rollouts, simplified backend logic, and more robust developer tools under the hood.