Messenger
Private chats, end-to-end encrypted secret chats, group channels, voice messages, and video calls — all in one.
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- End-to-end encryption for secret chats (web and Android)
- Private chats and group conversations
- Channels with subscribers
- 1-on-1 voice and video calls
Features
18- End-to-end encryption for secret chats (web and Android)
- Private chats and group conversations
- Channels with subscribers
- 1-on-1 voice and video calls
- Voice rooms
- Voice messages with waveform
- Send photos, videos and documents
- Scheduled messages
- Bots and webhook integrations
- Search across chats and media
- Privacy settings (last seen, read receipts)
- Sealed sender for anonymous delivery
- Chat folders, pinned and saved messages
- Forwarding, quoting and message reactions
- Video messages (circles) and stickers
- Polls in chats and link previews
- Call history and safety number verification
- Invite links and custom chat wallpapers
Messenger security: what is encrypted and how to verify it
Short answer: in iman Messenger only secret chats (one-to-one, in the web app and the Android app) are end-to-end encrypted. They use the Signal protocol (X3DH key agreement and the Double Ratchet) through existing libsignal-based libraries. Regular chats, groups, channels and most calls are encrypted in transit and at rest on our servers, but iman can technically read them. No independent security audit has been published yet.
Read the security whitepaperHow to verify a contact's safety number in an iman secret chat
1. Open a secret chat
Start or open a secret chat with your contact in the web app or the Android app. Secret chats are the end-to-end encrypted ones.
2. Open the safety number
Open the chat's security details and choose Verify to see the safety number: 60 digits in groups of five.
3. Compare it on a separate channel
Compare the number with the one on your contact's screen, in person or over a call where you recognise their voice. Do not use the same chat to compare it.
4. Mark it as verified only if it matches
If the numbers are identical, mark the contact as verified. If they differ, do not verify: each device has its own number, so check you are comparing the device your contact is using, and treat a persistent mismatch as a possible interception.
5. Re-verify after a change notice
If iman shows that the safety number changed or that your contact registered a new device, compare again before sending anything sensitive.
6. Optionally check the call code
During a call, compare the 6-digit call code with your contact the same way. It checks the call connection, not the message keys.
Questions and answers
- Is iman Messenger end-to-end encrypted?
- Only secret chats are: one-to-one chats in the web and Android apps, using the Signal protocol. Regular chats, groups, channels and most calls are encrypted in transit and at rest on the server but are not end-to-end encrypted.
- Can iman read my regular chats?
- Technically yes. Regular chats, groups and channels are stored on the server, sealed at rest with a key the server side holds. Use a secret chat for conversations that must not be readable by iman.
- Which encryption protocol does iman use for secret chats?
- The Signal protocol: X3DH key agreement and the Double Ratchet, implemented by existing libsignal-based libraries rather than by custom ciphers.
- Are group chats end-to-end encrypted?
- No. Groups and channels are cloud chats and do not use group sender keys.
- Do notifications reveal message content?
- For secret chats the notification is a generic line with no chat or sender identifiers. For other chats it can include the sender name and a preview, which pass through Google or Apple push services.