Your inbox has never known peace. Now the fight pays you.
Email promised quiet correspondence and delivered an arms race — filters guessing at spam forever while your address, your archive, and your attention belong to someone else. SithBit doesn’t negotiate a truce. It is a decentralized mail protocol on Solana that changes the balance of power: postage paid by the sender and earned by you — roughly 90% of it lands in your wallet — addresses tied to your wallet instead of a rented domain, and mail encrypted end-to-end and stored off-chain on IPFS. No token: it runs on the SOL you already hold. Standard SMTP, IMAP, and POP3 underneath, so the inbox you already use just works.
The quiet inbox was always a lie
Email never had peace to offer — only filters guessing at spam while the volume climbed. Strip the illusion away and one real thing remains: how badly a sender wants your attention. SithBit makes that desire measurable. Every message from a stranger costs real SOL — a payment is the one thing a spammer, a phishing crew, or the AI writing their mail cannot fake.
Name the price of reaching you
Through a price you set yourself, your mailbox gains real strength. Strangers meet a default that is deliberately a wall; you lower it for the people you want to hear from, and senders you trust write for free. Anyone unwilling to pay what your attention is worth simply never lands. No filter to tune, no guesswork — just your terms.
Get paid for your own inbox
Through that strength comes power over email’s oldest bargain: postage from strangers lands directly in your wallet, compensating the attention you already spend defending it. Opt into the campaign pool and advertisers pay you postage to land in your inbox and a bounty when you reply — on topics you chose.
End spam at the source
Through better economics, a victory fifty years of filtering never delivered: filters treat the symptom, but the incentive to spam was never touched. When reaching a hundred million inboxes costs a hundred million stamps, the math that created spam finally points the other way.
An address nobody can take from you
Winning the spam fight breaks only half of email’s chains. The rest — an address that lives on someone else’s domain, an archive readable on someone else’s servers — break here. Your address is tied to your wallet; move it anywhere and keep your history and identity intact. Every message is sealed straight to your wallet and stored on IPFS, so no provider ever holds your mail in the clear — and no provider holds you.
A protocol, not a product
No gatekeeper, no single company — identity and settlement ride a network nobody owns, and anyone with a domain can run a mail server and earn 10% of the postage it carries, on the same footing as every other operator. It’s that force, not anyone’s promise, that keeps your mail free.
No conversion required
There’s nothing to convert to. Standard SMTP, IMAP, and POP3 to the letter — your existing mail client just works. No new app to learn, no migration, no ceremony.
Curious how sender-paid postage ended up solving a fifty-year-old email problem? Start with the Prelude for the story of how SithBit came to be, or jump straight to the Introduction for how the economics actually work.