Send Post‑Interview Feedback Nudges from Google Sheets to Slack (with Email Fallback)
Send Post‑Interview Feedback Nudges from Google Sheets to Slack (with Email Fallback) This n8n workflow automates the process of sending post-interview feedback reminders to interviewers. It checks a Google Sheet daily for pending feedback entries and sends personalized Slack DMs or email nudges based on the availability of Slack IDs. It ensures consistent follow-ups and eliminates manual tracking. Who’s it for HR and Talent Acquisition teams Recruitment coordinators Engineering/Design/Product team leads conducting interviews Anyone managing interview feedback collection using Google Sheets and Slack How it works Trigger: The workflow starts every day at 6:00 PM using the Schedule Trigger. Fetch Data: It reads a Google Sheet with interview entries via the Google Sheets (Read Sheet) node. Check Feedback Submission: An IF node filters entries where feedback has not been marked as “Yes.” Slack Check: Another IF node checks if a valid Slack ID is present. If Slack ID exists: Sends a Slack DM reminder. If Slack ID is missing: Sends a fallback reminder via email using Gmail. Update Status: Updates the sheet to mark the reminder as sent, avoiding future duplicates. How to set up Prepare a Google Sheet with columns: candidate_email, interviewer_email, feedback_submitted, slack_id, reminder_sent. Connect your Google Sheets, Slack, and Gmail accounts in n8n. Set the Schedule Trigger to your preferred time (e.g., 6:00 PM). Map the correct columns in each node. Deploy and test the workflow. Requirements A working n8n instance. Google Sheets with structured feedback data. Slack workspace and bot token with DM permissions. Gmail account connected to n8n for fallback reminders. Interviewers listed with either Slack ID or valid email. How to customize Change the schedule (e.g., run hourly or on specific days). Customize Slack or Email message templates. Add conditional formatting for different interview types or roles. Integrate additional columns for logging timestamps or retries. Expand to MS Teams or other email providers. Add‑ons Google Sheets Timestamping**: Log the exact time when reminders were sent. Multi-language Reminder Support**: Based on interviewer’s preferred language. Feedback Form Auto-linking**: Embed Google Form links dynamically in messages. Notion or Airtable Integration**: Extend tracking to other platforms. Use Case Examples A recruiter managing 10+ interviews daily ensures feedback is collected within 24 hours. An engineering manager automates reminders for panelists to fill candidate scorecards. HR teams use it during hiring surges to eliminate feedback bottlenecks. Common Troubleshooting | Issue | Possible Cause | Solution | | ---------------------------- | --------------------------------- | ------------------------------------------------------- | | Reminders not sending | Schedule Trigger not firing | Check cron expression or timezone settings | | Slack messages not delivered | Slack ID missing or invalid | Ensure Slack IDs are mapped correctly in the Sheet | | Emails not sent | Gmail node not authorized | Reconnect Gmail credentials in n8n | | Entries repeatedly reminded | Sheet not updating after reminder | Confirm Update node is marking reminder_sent as “Yes” | | Slack bot errors | Insufficient permissions | Ensure bot has permission to send DMs | Need Help? Need a hand setting this up or want to customize it further for your recruitment workflow? Just drop a message to our n8n automation team at WeblineIndia — we’re here to help streamline your hiring feedback process!. An n8n automation workflow template by WeblineIndia.
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