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CRM ⇄ Business productivity

Close to Slack integration — real-time, two-way sync

Keep Close and Slack in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.

  • 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

Case study
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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Migrated from Celigo
Why teams connect Close and Slack

Sync what happens in Slack with the customer records in Close, in real time and in both directions.

The CRM is supposed to be the record of every customer relationship, but customer-relevant information also accumulates in the other tools a team runs. Whatever Slack holds or produces that touches a customer, whether conversations, payments, replies, enriched data, or notes, the CRM only benefits if it arrives without someone copying it over.

Stacksync connects Users, User groups, Files, Reactions in Slack to Leads, Contacts, Opportunities, Activities in Close with bi-directional, real-time sync. Activity and record changes in Slack update the matching contact or account in Close, and CRM data flows the other way wherever Slack can store and use it.

Common use cases

  • Alert an operations channel when a data sync detects conflicts or validation failures
  • Post CRM record changes into deal or account channels so the team sees updates without opening the CRM
  • Write product usage or firmographic data from an internal database onto Close lead custom fields to prioritize follow-up.
  • Sync Close leads and opportunities into Postgres or a warehouse for pipeline reporting outside Close's built-in reports.

Where Slack handles support or shared inboxes

Tickets and conversations attach to the right contact and account in Close, so sales sees open issues before the next call.

Where Slack supplies contact or company data

Enriched fields land directly on records in Close, and refreshes keep them from going stale.

Where Slack can store CRM context: fields kept current

Owner, lifecycle stage, or account details from Close sync into Slack, so people working there have the context without switching tools.

What you can sync between Close and Slack

Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.

Close objects Slack objects
Tasks Follow-up items assigned to users; synced for workload and SLA reporting. Threads Replies grouped under a parent message timestamp, preserved when archiving conversations.
Custom Activities User-defined activity types with their own custom fields, mapped like standard activities. Users Workspace members with profile fields, synced against HR systems and identity providers.
Custom Fields Org-specific fields on leads, contacts, and opportunities; addressed by stable field ids in syncs. User groups Handles like @support that map to teams in external systems.
Users Sales reps referenced as owners on leads, opportunities, and activities. Files Uploads attached to messages, retrievable for archiving.
Smart Views Saved lead searches that can scope which records a segment-based sync pulls. Reactions Emoji responses that can drive workflows, such as approving a synced record.
Leads The top-level record in Close; represents a company and holds its contacts, opportunities, and activity history. Channels Conversations (public, private, DMs) that messages are read from and posted to.
What ships with Close ⇄ Slack

Connect Close and Slack for flexible, real-time data sync.

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

Real-time

Two-way sync

Changes in Close or Slack instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever Close or 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 Close or Slack record.

Observability

Monitoring

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

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between Close and Slack.

How the Close and Slack connectors work

Close

Integration surface
REST API
Authentication
API key (sent via HTTP Basic auth)
Change detection
Webhook subscriptions for record events, with polling on date_updated fields for backfills
Capabilities
read · write · webhooks
Rate limits
Subject to per-endpoint rate limits communicated in response headers

Slack

Integration surface
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
Capabilities
read · write · webhooks
Rate limits
Per-method rate limit tiers; message posting is additionally limited per channel
How it works

How to connect Close to Slack — three steps, no code

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 Close and Slack with each platform's 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
    Close connected
    Slack connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the Close and Slack objects to sync — Stacksync auto-detects both schemas, 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 · Close ⇄ 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
    Close Slack
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
Try interactive demo
FAQ

Close and Slack integration FAQ

SECURITY

Security teams love 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

Related integrations

Every pair below is a real-time, two-way sync. Search all 386 integrations available for Close and Slack.

Popular · 8 of 386
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