Sendant: Private Messenger

Ryabinski Labs

About this app

Sendant is a private, encrypted messenger built on a simple promise: your conversations belong to you. Messages are end-to-end encrypted by default, your keys never leave your device, there's no central server quietly logging who you talk to — and no phone number required to start.

It feels like the messengers you already know — fast chats, groups, channels, attachments, reactions, edits, and disappearing messages, with voice and video on the roadmap — but the trust model underneath is different.

WHY SENDANT
• End-to-end encrypted by default. Only you and the people you're talking to can read your messages. Not us — by design, our infrastructure only ever sees ciphertext.
• No phone number. Start private. Your identity isn't tied to your SIM, and your keys stay under your control.
• Built peer-to-peer. Your identity and keys live on your device, not in an account on our servers. Direct device-to-device and relay paths are rolling out; today your messages travel a sealed store-and-forward route.
• Messages that don't get lost. Your message is sealed on your device and held in a store-and-forward mailbox the servers can't read — so when your contact is offline or on a flaky connection, it waits and delivers when they reconnect, instead of failing.
• Less metadata. We minimize the "who talked to whom, when" trail that centralized apps collect by default.
• Security in plain language. Sendant shows clear status — "Verified," "End-to-end encrypted," "Safety number changed" — never jargon. QR and cryptographic safety-number verification are rolling out.

TRUST YOU CAN READ
Security here speaks plain English. Sendant shows "Verified," "End-to-end encrypted," "New device added," and "Safety number changed" — never cryptographic jargon. Every moment that asks you to make a trust decision is surfaced clearly, never buried.

BUILT FOR
• People who want a mainstream-easy messenger without centralized trust in their message history.
• Journalists, NGOs, and civil-society teams who need confidential coordination and resilience to account takedowns.
• Communities and operators who can run relay and mailbox nodes to strengthen the network.

PRIVACY BY DEFAULT
No phone number required. Local-first storage on your device. Your keys stay under your control.

Private by default. Calm by design.

What’s new

Group chats: create end-to-end encrypted groups with up to 16 people
Reply with sender attribution, voice notes and photos in groups
Replying by swipe now opens the keyboard right away
Chats now open instantly at your latest messages — long chats no longer scroll from the top
New: unread-messages divider and a jump-to-latest button