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

Calls now play through a connected Bluetooth headset — both what you hear and your microphone — whenever the headset supports it; output-only headsets are used for listening, with the phone's microphone. Fixed: “What's New” no longer repeats the same release notes after every update.