GUI clients

Most people use SithBit through one of four graphical clients — the webmail app, the Chrome extension, the Outlook add-in, and the Thunderbird extension. Each one wraps the same account-management surface in a different host, so choose the place where you already read mail. Everyday use does not require the sithbit command-line tool.

They are not four separate apps that happen to look alike: all four run the same shared core (webclients/shared/), so a pane behaves identically wherever you meet it. Everything that must be signed is signed client-side by a WebAssembly module compiled from this workspace’s own crates — the server only relays already-signed transactions and never holds your key.

Because they share that core, they also share the same first-run experience: every one walks a brand-new user through the identical five-step browser onboarding wizard — create or import a wallet, then claim a mailbox (and, optionally, a handle) on-chain in one pass. Once you are set up, the same wizard is reachable again from each client’s dashboard to onboard a second wallet.

Pick the client that fits your setup:

• webmail app — a standalone browser app, nothing to install.
• Chrome extension — an installable browser-toolbar popup for account onboarding and wallet management.
• Outlook add-in — for Microsoft Outlook.
• Thunderbird extension — for the Thunderbird desktop mail client.

The three extension pages each open with an Installing from the store section (Chrome, Outlook, Thunderbird) alongside the build-and-sideload path — note the store listings are placeholders until the extensions are published.

Reading and sending mail otherwise uses ordinary IMAP, POP, and SMTP, just as it does in a conventional mail client. The one exception is the biggest reason to pick a plugin over a generic mail app: the Thunderbird extension and Outlook add-in also carry Lockbox, automatic end-to-end encryption that seals a message on your device before it ever reaches a server — including your own mail operator’s. Lockbox works over any existing email account and needs no funded wallet and no on-chain mailbox, so it is also the lowest-commitment way to try SithBit: install the plugin, seal your mail, and claim a mailbox later if you want an address that pays you. Everything else in these clients is the account-management and onboarding surface, not a replacement for your mail app.

Operators: everything on these pages is written for the person using a client. The server side — what each one needs of account-api, and how the webmail and marketplace bundles are built and mounted — is Serving the browser clients in the technical reference.