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Business productivity

Connect Slack to any app with two-way sync.

Two-way sync Slack across all your CRMs, databases, data warehouses, EDI systems, and AI tools, with custom workflows tailored to your data.

  • SOC 2 and 6 other compliance frameworks
  • POC with real engineers in minutes

Adopted by fast-scaling companies moving mission-critical data in real time

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Migrated from MuleSoft
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Migrated from Celigo
Migrated from Heroku Connect
Migrated from Matillion
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Migrated from Fivetran
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Object catalog

What Stacksync syncs in Slack.

These objects sync between Slack and any connected system, with field-level mapping and conflict resolution. Custom fields are picked up from the live schema where Slack exposes them.

Channels
Conversations (public, private, DMs) that messages are read from and posted to.
Messages
Keyed by channel and timestamp; posted via chat.postMessage and read via history methods.
Threads
Replies grouped under a parent message timestamp, preserved when archiving conversations.
Users
Workspace members with profile fields, synced against HR systems and identity providers.
User groups
Handles like @support that map to teams in external systems.
Files
Uploads attached to messages, retrievable for archiving.
Reactions
Emoji responses that can drive workflows, such as approving a synced record.
API surface

How Stacksync connects to Slack.

The connector runs on Slack's native API. Stacksync manages authentication, rate limits, retries, and schema changes so your team does not maintain integration code.

Connection
Web API (HTTP RPC-style methods) plus the Events API
Authentication
OAuth 2.0 with bot or user tokens and granular scopes
Change detection
Events API webhooks, delivered over HTTP callbacks or Socket Mode
Rate limits
Per-method rate limit tiers; message posting is additionally limited per channel

Sync directions

  • Read Supported
  • Write Supported
  • Change data capture Not available
  • Webhooks Supported
What ships with Slack

Connect Slack for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every connection.

Real-time

Two-way sync

Changes in Slack instantly reflect across connected systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Slack data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.

At scale

Event queues

Handle millions of events per minute without losing a single Slack record.

Observability

Monitoring

Track your Slack sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions.

Use cases

What teams run on the Slack connector.

Slack is bought by IT and adopted company-wide as the messaging layer, sitting alongside the CRM and support stack as the place where teams actually coordinate. Its data gravity is conversational: channels, threads, files, and a complete user directory. In integration work it is usually a notification destination and a source of user and channel metadata rather than a system of record.

  • RevOps
  • IT admins
  • Internal tools engineers
  • Support operations

  1. Post CRM record changes into deal or account channels so the team sees updates without opening the CRM

  2. Sync the Slack user directory with the HRIS or identity provider to keep memberships and profiles current

  3. Archive channel messages into a warehouse or database for compliance and analytics

  4. Create or update records in a database when specific messages or reactions occur in a channel

  5. Alert an operations channel when a data sync detects conflicts or validation failures

  6. Post Messages to Channels when records change in a connected system, for example deal-stage or escalation alerts driven by CRM or database updates.

All Slack integrations

Pick the system you need to keep in sync with Slack. Each page covers the sync setup, field mapping, and common workflows for that pair.

CRM · 40

ERP · 47

Database · 45

Data warehouse · 30

Business productivity · 26

Accounting and finance · 8

How it works

Set up Slack in minutes, without APIs.

Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.

  1. 01

    Connect your apps

    Authenticate Slack with its native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    Slack connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Slack objects to sync — Stacksync auto-detects the schema, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · Slack
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    Slack database
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
Try interactive demo

FAQ

Slack connector FAQ

What can I sync with the Slack connector?

Slack's core objects — Channels, Messages, Threads, Users and custom fields — can sync with any of 196 other systems. Every integration is real-time and bidirectional, with field-level mapping and conflict resolution.

How does Stacksync connect to Slack?

Via Web API (HTTP RPC-style methods) plus the Events API, authenticated with OAuth 2.0 with bot or user tokens and granular scopes. Changes are detected as follows — events API webhooks, delivered over HTTP callbacks or Socket Mode. Stacksync manages rate limits, retries, and schema changes automatically.

Is the Slack connector two-way?

Yes. Changes made in Slack propagate to the connected system and vice versa, in milliseconds. One-way flows are also supported when a direction should stay read-only.

How long does a Slack integration take to set up?

Most Slack integrations go live in minutes: authenticate Slack and the other system, pick objects and fields, and enable the sync. No code and no infrastructure to manage.

Is Slack data secure in transit?

Stacksync is SOC 2 Type II, ISO 27001, GDPR and HIPAA compliant. Slack data is encrypted in transit, and a zero-persistent-storage architecture means records are not retained after a sync operation.

SECURITY

Security teams trust Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
CSA STAR
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more
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