Issue cohort completion certificates with pdfmill, Gmail and Google Drive
UnknownUnknown. This template uses community nodes we can't verify statically. Uses community nodes that can't be verified statically (unverified community packages are off by default in 3.0). Static check, last run 2026-10-19.
What this workflow does
This workflow has 9 nodes and runs when an HTTP POST request hits its webhook URL. Along the way it connects Gmail, Google Drive and Pdfmill (community).
How it runs
Trigger: When an HTTP POST request hits its webhook URL.
- Validate and build the cohort certificates (Code): runs custom JavaScript code
- Is the entire roster valid? (If): checks a condition and branches into true / false
- Generate each certificate PDF (Pdfmill): template
- Return one 400 roster error (Respond to Webhook): sends the response back to the webhook caller
- Email each certificate to its attendee (Gmail): uses Gmail
- Archive each certificate in Google Drive (Google Drive): upload (file)
- Wait for email and archive (Merge): merges the data from its input branches
- Return the issued count (Respond to Webhook): sends the response back to the webhook caller
Services it uses
Before you upgrade to n8n 3.0
We can't fully verify this one: it relies on 1 community package, and n8n 3.0 turns unverified community packages off by default (N8N_UNVERIFIED_PACKAGES_ENABLED=false).
- Check that n8n-nodes-pdfmill is verified or supports 3.0 (used in Generate each certificate PDF).
Nodes used (8)
- Webhook
n8n-nodes-base.webhook - Code
n8n-nodes-base.code - If
n8n-nodes-base.if - Pdfmill
n8n-nodes-pdfmill.pdfmill - Gmail
n8n-nodes-base.gmail - Google Drive
n8n-nodes-base.googleDrive - Merge
n8n-nodes-base.merge - Respond to Webhook
n8n-nodes-base.respondToWebhook
From the author
Quick overview Issue personalized completion certificates to an entire cohort from one validated webhook. pdfmill renders each PDF, Gmail delivers it, and Google Drive archives the same binary before n8n returns the issued count. How it works 1. Receives a…