Private by design

Sieve Studio

  • no backend
  • no tracking
  • no server upload

Generate Sieve rules, and test them against raw emails locally in your browser.

How it works

Every step happens on-device, including parsing, `.eml` loading, and rule evaluation.

Filter Generator

Compose a filter visually

Add conditions, choose actions, and refine the generated rule as you go.

Conditions

Define when the filter should trigger.

Actions

Choose what should happen when a message matches.