Write, design, launch Klaviyo campaigns in minutes with AI.
Copy. Design. Live — all from one prompt. Sendsei reads your store, builds a Brand Brain, and ships one launchable email at a time. This is what AI was actually supposed to do.
How it works
How one campaign gets made.
You review each step before anything reaches your Klaviyo account.
- 01
Build your Brand Brain
Add your website. Sendsei collects your source pages, products, product images, logo, colors, voice, and market insights. Correct the brand details before generation.
- 02
Set the campaign brief
Add a headline and description. Review the objective, angle, audience, proof, call to action, and send time.
- 03
Review sectioned copy
Choose a subject line and review the preheader, body sections, call to action, and plain text. Klaviyo tokens include safe fallbacks.
- 04
Generate the design
Choose relevant product images and generate each section. Preview desktop, mobile, and dark versions, then edit, crop, regenerate, or delete any section.
- 05
Pass the quality check
Sendsei checks the brief, claims, audience, tokens, links, design, and email safety. Launch stays blocked until every required check passes.
- 06
Push to your Klaviyo
Create the approved campaign in your brand's own Klaviyo account.
Your Brand Brain.
The account Sendsei builds from your website — source pages, catalog, voice, design, and claim rules — and you can rebuild when anything changes.
Get started →Website & source pages
Sendsei scrapes your website and keeps the pages it learned from, so every generation is tied to inspectable source material.
Catalog & creatives
Products, descriptions, prices, and product-page images are gathered into a catalog with rights status and perceptual deduplication.
Design profile
Logo treatment, brand colours mapped to roles, and an email-safe typography fallback are stored before design generation begins.
Voice & core profile
Positioning, tone, words to use and avoid, and example voice lines become the profile that copy generation writes from.
Market insights
Buyer pains, desires, objections, and campaign opportunities from market research anchor the brief instead of generic angles.
Claim rules & readiness
Banned claims, regulated-category disclaimers, and readiness gates block launch-quality generation until the Brand Brain is good enough.