Zero Data Retention
Messages transit SyncRivo's routing layer and are never persistently stored. Your conversations stay on your platforms — SyncRivo never holds your data.
How message routing works
SyncRivo's routing architecture is designed as a transit layer — not a storage layer. Every message follows a strict three-step path with no persistence at any stage:
- 1Event received from platform webhookThe source platform (Slack, Teams, etc.) pushes a webhook event to SyncRivo's routing endpoint. The message payload is held in memory only.
- 2Message content transformed and routed to destination APIThe routing engine applies format transformation (markdown, mentions, attachments) and calls the destination platform's API in real time. No write to any database occurs.
- 3Delivery confirmed — no content persistedOnce the destination platform returns a success response, SyncRivo writes a routing event record (metadata only: timestamps, platform IDs, delivery status). Message content is discarded.
What is stored vs. not stored
| Data type | Stored | Not stored |
|---|---|---|
| Message content (text) | Never persisted | |
| File attachments | Never persisted | |
| Mentions / reactions | Never persisted | |
| Routing timestamp | Yes — metadata only | |
| Source/destination platform IDs | Yes — metadata only | |
| Delivery status | Yes — metadata only | |
| User identity mapping config | Yes — tenant-isolated DB |
Compliance implications
- HIPAA BAA available — PHI never stored on SyncRivo
- SOC 2 Type II certified data flow architecture
- GDPR: acts as data processor under Article 28
- EU-region routing keeps transit within EU borders
- Immutable audit log for compliance reviews
- Configurable log retention up to 7 years on Enterprise
How Zero Data Retention works in SyncRivo
Event ingestion and in-flight boundary
Every inbound webhook (Slack Events API, Microsoft Bot Framework, Google Chat Pub/Sub, Zoom, Webex) terminates TLS 1.3 at the regional edge and is HMAC-verified against the platform's signing secret before entering the routing pipeline. Verified payloads live entirely in process memory — they are never written to a log file, queue, disk, or swap. Rails inside the routing engine enforce the in-flight boundary: the HTTP handler, the transform layer, and the outbound API client hold message content only for the duration of a single async execution context, typically under 50ms. Heap-scrubbing routines zero the payload buffer immediately after the destination API call returns success.
Zero-persistence architecture and metadata-only audit
The routing engine has no database on the hot path for message content. The only durable write during a routing cycle is a metadata-only audit record: timestamps, platform IDs, channel IDs, delivery status, idempotency key, and an HMAC-signed content hash of the original payload. The content hash lets compliance teams later verify that a specific message was routed (if the source platform's archive still holds the original), without SyncRivo ever storing the plaintext. Container images run with read-only root filesystems and tmpfs-only writable mounts, so even kernel-level crash dumps cannot leak message content to persistent storage.
Delivery guarantees under zero retention
When a destination API returns a retryable error, SyncRivo re-requests the original payload from the source platform via conversations.history (Slack), Graph message fetch (Teams), or the equivalent on Google Chat / Zoom / Webex — rather than storing the payload for retry. This keeps the zero-storage invariant intact even for the 10-minute exponential backoff window. Retries carry the original idempotency key so the destination platform deduplicates correctly. SOC 2 Type II auditors verify this architecture annually, and the data-flow diagram is published as part of the Trust Center for independent review.
Platform-specific behavior
Here is how Zero Data Retention behaves across each messaging platform we support. Every platform's webhook contents transit SyncRivo in memory only — none is ever written to durable storage.
| Platform | Behavior | Known limitation |
|---|---|---|
| Slack | Events API payloads processed in-memory; retry sources original message via conversations.history on transient errors. | Slack files.sharedPublicURL returns a link that is cached in-memory only for the duration of the routing hop. |
| Microsoft Teams | Bot Framework payloads processed in-memory; retry re-fetches via Graph messages API with delta token. | Graph rate limits can force Teams retries beyond 10 minutes — affected messages logged as failed, no content retained. |
| Google Chat | Pub/Sub messages acked only after destination delivery; content buffer zeroed within same async context. | Pub/Sub at-least-once semantics may briefly hold payload in broker — not on SyncRivo infrastructure. |
| Zoom Team Chat | Webhook payloads routed in-memory; retry sources via Zoom /im/chat/messages API with message_id. | Zoom webhook batch mode holds up to 10 events per POST — all events processed in a single in-memory context. |
| Cisco Webex | Webhook payloads processed in-memory; retry refetches via /messages/{id} endpoint. | Webex encrypts message payloads at rest with CI keys — SyncRivo never holds the decryption key beyond the routing hop. |
Three-Platform Bridges
Slack + Teams + Google Chat
Bridge all three major enterprise messaging platforms.
Slack + Teams + Webex
Connect Slack and Teams users with Cisco Webex.
Slack + Teams + Zoom
Unify Slack, Teams, and Zoom Team Chat.
Slack + Google Chat + Zoom
Three-way bridge for Slack, Google Chat, and Zoom.
Slack + Google Chat + Webex
Unify Slack, Google Chat, and Cisco Webex.
Slack + Zoom + Webex
Bridge Slack with both Zoom and Webex.
Teams + Google Chat + Zoom
Connect Teams, Google Chat, and Zoom Team Chat.
Teams + Google Chat + Webex
Bridge Teams, Google Chat, and Cisco Webex.
Teams + Zoom + Webex
Unify Teams, Zoom, and Webex in one bridge.
Google Chat + Zoom + Webex
Connect Google Chat with Zoom and Webex.
Ready to connect? Slack ↔ Teams connection setup →
Frequently asked questions
- Does SyncRivo store my messages?
- No. SyncRivo's routing layer operates as a pure transit intermediary. Messages pass through the routing engine and are delivered to the destination platform API within milliseconds. SyncRivo does not persist message content to any database, object store, or log file. The only data SyncRivo retains is routing metadata (timestamp, source platform, destination platform, delivery status) — never message content.
- How does zero data retention affect HIPAA compliance?
- Zero data retention is a critical HIPAA safeguard for messaging integrations. Because SyncRivo never stores Protected Health Information (PHI) — only routing metadata — the data handling risk is substantially reduced. SyncRivo's Enterprise plan includes a HIPAA Business Associate Agreement (BAA) that formally documents this architecture for your compliance documentation.
- Is there an audit log if SyncRivo doesn't store messages?
- Yes. SyncRivo maintains an immutable routing event log that records: timestamp, source platform, destination platform, channel IDs, delivery status, and user identity mapping. This log contains enough information for compliance audits without storing message content. Audit logs are retained for 90 days on Growth plans and configurable (up to 7 years) on Enterprise.
- Can I verify zero data retention independently?
- Yes. SyncRivo's SOC 2 Type II certification includes third-party auditor review of the data flow architecture. The SOC 2 report is available to Enterprise customers under NDA. Additionally, SyncRivo publishes its data flow documentation publicly at the security page for technical review.
Related integration guides
Three-Platform Bridges
Connect three enterprise messaging platforms simultaneously with SyncRivo's cross-platform bridges.