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Build and update websites by email

Casso is an AI website agent that creates, edits, and publishes static websites from plain-language email requests. It can ask follow-up questions, use attachments, and deploy to a free Casso subdomain or your own domain.

Agenticness = how independently a tool can take action, scored across 9 dimensions. Scored independently by David Kooi, Skylark Creations — see full rubric → Last re-evaluated 29 August 2026.

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Free Tier
Web
File Access
B2B
No-Code
Cloud Hosted
Semi-Autonomous
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About

What It Is

Casso Websites is an AI website-building and hosting service that works primarily through email. You send a request in plain language, attach any useful files, and Casso generates or updates a site for you. It is aimed at individuals and small...

What To Know

Casso looks genuinely agentic for a website product: it can interpret a request, ask clarifying questions when needed, build the site, publish it, and later apply edits from new emails. The strongest fit is for straightforward marketing sites,...

Key Features
Builds websites from email requests
Asks clarifying questions when instructions are vague
Publishes sites to a free .bycasso.com domain
Connects a custom domain you already own at no cost
Buys and registers a new domain on the paid plan
Use Cases
Launching a simple business website from a single email
Updating a live site from your phone without logging into a dashboard
Publishing a landing page using PDFs, logos, or other attachment assets
Agenticness: Guided Assistant

Executes tasks you assign, one step at a time, within narrow domains.

High evidence
Last evaluated: Aug 29, 2026

Dimension Breakdown

Action Capability
Autonomy
Planning
Adaptation
State & Memory
Reliability
Interoperability
Safety
Operator Sovereignty

Categories

Pricing
  • Free: $0. Hosted on a .bycasso.com domain indefinitely, or on a domain you already own. Includes website creation by email, email-based updates, static pages built for fast loading, custom-domain connection, and HTTPS setup.
  • Premium ($8/mo): $96 billed once a year. Includes everything in Free, plus Casso buys and registers a domain name for you, keeps it renewed while you stay on the plan, and raises limits on saved data and form submissions.
Details
AddedAugust 29, 2026
RefreshedAugust 29, 2026
Agenticness
Quick Facts
DeploymentCloud-hosted
AutonomySemi-autonomous
Model supportSingle model
Open sourceNo
Team supportIndividual only
Pricing modelFreemium
Interfaceweb, gui
Sources
Last updated August 29, 2026
Free daily brief

When Casso Websites changes its pricing, we catch it the next morning

We recrawl every tool in this directory daily. AI Insider is the 3-minute brief on what actually changed — pricing, features, score moves on our 36-point rubric — often before any press coverage. Sent daily. Skipped when nothing happened.

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