Automate post-interview feedback reminders using Google Sheets, Slack, and Gmail

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

1. Trigger: The workflow starts every day at 6:00 PM using the Schedule Trigger. 2. Fetch Data: It reads a Google Sheet with interview entries via the Google Sheets (Read Sheet) node. 3. Check Feedback Submission: An IF node filters entries where feedback has not been marked as “Yes.” 4. 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. 5. Update Status: Updates the sheet to mark the reminder as sent, avoiding future duplicates.

How to set up

1. Prepare a Google Sheet with columns: candidateemail, intervieweremail, feedbacksubmitted, slackid, remindersent. 2. Connect your Google Sheets, Slack, and Gmail accounts in n8n. 3. Set the Schedule Trigger to your preferred time (e.g., 6:00 PM). 4. Map the correct columns in each node. 5. Deploy and test the workflow.