Sievepad: Sieve email filter playground

Sievepad by Stalwart Labs

Workspaces

Open an example as a new workspace

1Script

2Message

Drop an .eml or .sieve file

Envelope

MAIL FROM RCPT TO

3Result

Loading engine… sieve-rs Powered by Stalwart Mail Server · Try Stalwart

Settings

Saved with this workspace

Welcome to Sievepad

Write and test Sieve email filters against real messages, powered by the Sieve interpreter of Stalwart Mail Server.

Everything runs in your browser. Scripts are compiled and executed locally with WebAssembly.
Nothing is stored on a server. Your scripts, messages and settings are saved only in this browser.
Sharing is up to you. A share link carries the workspace inside the link itself; nothing is uploaded.

Share workspace

The workspace is compressed into the link itself. Nothing is uploaded: whoever opens the link gets their own copy.

Include test messages

Messages may contain personal information. Check them before sharing.