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ExpertProfessionalLead GenerationScheduled trigger16 nodes

Follow up: Slack + approval pause

Runs on a schedule across Slack, PostgreSQL and Google Sheets, walks the list in batches, pausing between them, then rolls the rows up into a few numbers. Built for enrichment, around a "Read Pending Queue (PostgreSQL)" step, in 16 documented nodes.

Follow up with trial users with PostgreSQL and Slack. An original, ready-to-import n8n workflow built around the 'Drip Sequence' pattern for sales & CRM. It runs on a schedule and orchestrates 16 nodes across Slack, PostgreSQL, Google Sheets. 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 enrichment, without anyone re-typing a row
  • A failed Slack or PostgreSQL call is retried rather than dropped, at any of the 16 nodes in this enrichment build
  • The pause before Slack is durable — a enrichment run survives a restart
  • Batches the work so Slack rate limits never break a enrichment run
  • Fans the same result out to Google Sheets in the same run, for enrichment

Use cases

  • Teams keeping Slack and PostgreSQL aligned by hand for enrichment
  • Enrichment sequences that run over days and must survive a restart before Slack
  • A backlog too large to push into Slack in one pass, across 16 nodes
  • Enrichment work where "Read Pending Queue (PostgreSQL)" is still a manual step before Slack

Integrations

SlackPostgreSQLGoogle SheetsHTTP / REST APIGoogle Gemini

Workflow preview (16 nodes)

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

Daily ScheduleSchedule TriggerRead Pending Queue (Pos…PostgresKeep Valid LeadsFilterWork in BatchesSplit In BatchesProcess Batch ItemHttp RequestRespect Rate LimitsWaitAggregate Batch ResultsAggregateMark Completed in Googl…Google SheetsStamp Processing TimeDate TimeGuard Non-Empty emailFilterTag Pipeline MetadataSetSummarize Run StatsSetAppend Audit Row (Postg…PostgresSend Summary to SlackSlackCapture Failure ContextSetEscalate Failure to Sla…Slack

What's inside (16 nodes)

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

AggregateDate TimeFilterGoogle SheetsHttp RequestPostgresSchedule TriggerSetSlackSplit 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

Advanced level

Adds branching depth and audit logging on top of the core pattern.

  • Sequencing multi-day sends with durable Wait nodes
  • Checking for conversion before every step so the drip stops
  • Segmenting the audience up front

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, Google Sheets, HTTP / REST API). 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.