Groups
Groups let friends, teams, and circles chat together. You choose how history works (encryption model) and how long the group lives.
Encryption models
| Model | Content vs Buzzio | Late joiner history | Relay / retention |
|---|---|---|---|
| E2E groups | No readable transcript (sender-key E2EE); media stays client-encrypted | No full open archive | Short catch-up ~5 days |
| Open-history groups | Text: server-held DEK. Media (planned): Bunny CDN bytes + signed URLs with content-hash dedup (not sealed) | Yes — shared backscroll | ~365 days class (+ media limits); history may use Cloudflare R2; media on Bunny |
Protocol detail: Groups cryptography · Shared media deduplication.
When to choose which
- E2E — privacy of content over full continuity.
- Open-history — onboarding and shared backscroll matter more than operator-blind history.
Lifetimes (orthogonal to crypto)
| Type | Meaning |
|---|---|
| Permanent | Ongoing group |
| Temporary | Time-limited (up to about 30 days / 720 hours depending on settings); ends when the window ends |
Both encryption models can be permanent or temporary.
Controls
- Vanish / Secure View / view-once media
- Group password (stored as a hash, not a plaintext password bag)
- Roles: Super Admin vs normal Admin