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ExpertProfessionalSocial Media AutomationScheduled trigger9 nodes

Auto-post social posts: Slack for scheduling, scheduled

Runs on a schedule across Slack and PostgreSQL, walks the list in batches, pausing between them, then rolls the rows up into a few numbers. Built for scheduling, around a "Read Content Calendar (PostgreSQL)" step, in 9 documented nodes.

Auto-post social posts with PostgreSQL and Slack on autopilot for Scheduling. An original, ready-to-import n8n workflow built around the 'Social Scheduler' pattern for marketing & advertising. It runs on a schedule and orchestrates 9 nodes across Slack, PostgreSQL. It uses n8n's LangChain AI nodes (Agent/Chain + chat model). Retry-on-fail is enabled on external calls. Import the JSON, add your credentials, and adapt the parameters. Your team sees the right data at the right time.

Key benefits

  • Keeps Slack and PostgreSQL in step for scheduling, without anyone re-typing a row
  • A failed Slack or PostgreSQL call is retried rather than dropped, at any of the 9 nodes in this scheduling build
  • The pause before Slack is durable — a scheduling run survives a restart
  • Batches the work so Slack rate limits never break a scheduling run
  • Pinned sample data ships with it — run all 9 nodes for scheduling before wiring Slack

Use cases

  • Teams keeping Slack and PostgreSQL aligned by hand for scheduling
  • Scheduling sequences that run over days and must survive a restart before Slack
  • A backlog too large to push into Slack in one pass, across 9 nodes
  • Scheduling work where "Read Content Calendar (PostgreSQL)" is still a manual step before Slack

Integrations

SlackPostgreSQLGoogle Gemini

Workflow preview (9 nodes)

The template's actual node layout and connections. Node parameters and credential slots unlock with the download.

Hourly ScheduleSchedule TriggerRead Content Calendar (…PostgresDue for Publishing?FilterPost One at a TimeSplit In BatchesPublish to SlackSlackSpace Out PostsWaitMark Row PublishedPostgresCount PublishedAggregateSend Summary to SlackSlack

What's inside (9 nodes)

A look at the node types this workflow uses. No purchase required — full parameters and credentials are yours after you buy.

AggregateFilterPostgresSchedule TriggerSlackSplit In BatchesWait

From download to running in 3 steps

  1. 1
    Import. In n8n, open Workflows → menu → “Import from File” and pick the downloaded JSON.
  2. 2
    Connect. Add your own credentials on the app nodes - n8n highlights exactly which ones need them.
  3. 3
    Activate. Run it once to test, then toggle Active. The automation is live.

What you'll learn

Core level

A compact production shape: validation and error handling without extra machinery.

  • Reading a content calendar and publishing only what is due
  • Spacing posts with a batch loop and Wait to respect rate limits
  • Walking a list in batches instead of firing everything at once

Every node carries its own documentation on the canvas, plus notes explaining why the architecture was built this way, a credential setup guide, troubleshooting, and three practice exercises. Sample data comes pinned to the trigger, so you can hit Execute and watch data flow before connecting a single account.

Common questions

What exactly do I get?

The complete, ready-to-import n8n workflow as a JSON file, delivered instantly after payment. Import it into your own n8n (cloud or self-hosted), add your credentials, and it runs.

How do I import it into n8n?

In n8n, open Workflows, click the three-dot menu, choose “Import from File”, and select the downloaded JSON. Then connect your own app credentials on the highlighted nodes.

Do I need anything else for it to work?

You need your own n8n instance and accounts/credentials for the apps this workflow connects to (Slack, PostgreSQL). No coding is required.

What if it doesn't work for me?

If the file is faulty, won't import, or isn't as described, contact us within 7 days and we'll fix it or refund you - see our refund policy.

Can I modify or resell it?

You can freely adapt and use it in your own or your clients' projects. Reselling or redistributing the template file itself is not permitted.

Original n8n workflow template created and owned by WorkflowCrate. After purchase you receive the ready-to-import JSON file and a license to use and adapt it in your own projects.