Create & validate digital certificates with PDF Generator API and Gmail
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 12 nodes and runs when an HTTP POST request hits its webhook URL (plus 1 other trigger). Along the way it connects Gmail and Pdf Generator Api (community).
How it runs
Trigger: When an HTTP POST request hits its webhook URL (plus 1 other trigger).
- Generate_Certification_ID (Code): runs custom JavaScript code
- Find_Certification_By_ID (Data table): get
- Find_Certification_By_ID (Data table): get
- Certification_Exists (If): checks a condition and branches into true / false
- Certification_ID_Exists (If): checks a condition and branches into true / false
- Respond_Found (Respond to Webhook): sends the response back to the webhook caller
- Respond_NotFound (Respond to Webhook): sends the response back to the webhook caller
- Insert_Certificaton (Data table): uses Data table
- Generate a PDF document (Pdf Generator Api): uses Pdf Generator Api
- Email_Certification (Gmail): uses Gmail
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 @pdfgeneratorapi/n8n-nodes-pdf-generator-api is verified or supports 3.0 (used in Generate a PDF document).
Nodes used (7)
- Data table
n8n-nodes-base.dataTable - Code
n8n-nodes-base.code - If
n8n-nodes-base.if - Gmail
n8n-nodes-base.gmail - Webhook
n8n-nodes-base.webhook - Respond to Webhook
n8n-nodes-base.respondToWebhook - Pdf Generator Api
@pdfgeneratorapi/n8n-nodes-pdf-generator-api.pdfGeneratorApi
From the author
Quick overview Issue and verify digital certificates with n8n using reusable PDF Generator API templates, unique certificate IDs, an n8n Data Table registry, Gmail delivery, and a public verification endpoint. How it works 1. Certificate creation — A POST…