Compare

How Koaich stacks up.

Most workspace tools encrypt "in transit" and "at rest" — and the vendor holds the keys. Koaich is structurally different. Here's the matrix.

	Koaich	Slack	Notion	Google Workspace	Microsoft Teams	Discord	Signal
E2E encrypted messages by default	Yes	No	n/a	No	Only 1:1 calls (opt-in)	No (DAVE for voice only)	Yes
E2E encrypted documents	Yes	n/a	No	CSE on Enterprise Plus only	Customer Key on E5 only	n/a	n/a
E2E encrypted files	Yes	No	No	CSE on Enterprise Plus only	Customer Key on E5 only	No	n/a
Can the vendor read your content?	No	Yes	Yes	Yes (default tiers)	Yes (default tiers)	Yes	No
Send to a non-platform recipient via email (encrypted)	Yes (encrypted digest)	No	Shared link (cleartext)	Yes (cleartext)	No	No	No
Group key rotation on member churn	Yes (MLS)	No	No	No	No	No	Yes
Message TTL / auto-expiration	Yes, every message	Workspace retention policies	No	Retention policies	Retention policies	Premium, channel-level	Yes
Per-vault key isolation	Yes	No (workspace-wide)	No	No	No	No	n/a
Recovery without vendor-held keys	Yes (Shamir + WebAuthn)	No (password reset by vendor)	No	No	No (AD reset)	No	Yes (PIN)

CSE = Customer-Side Encryption (Google's enterprise feature). Customer Key= Microsoft's enterprise customer-managed-key offering. Both are limited to specific surfaces, require enterprise licensing, and require the customer to run a KMS.