Project Description I am looking for an experienced n8n + DevOps automation developer to set up a self-hosted workflow automation system on a VPS and integrate it with Google and ZeptoMail services. The objective is to create a cost-effective, scalable workflow that can handle unlimited executions with a fixed monthly infrastructure cost. Project Description I am looking for an experienced n8n + DevOps automation developer to set up a self-hosted workflow automation system on a VPS and integrate it with Google and ZeptoMail services. The objective is to create a cost-effective, scalable workflow that can handle unlimited executions with a fixed monthly infrastructure cost. 2. ZeptoMail Configuration *.Configure ZeptoMail transactional email *Use ZeptoMail API via n8n HTTP Request node *Enable sending emails with PDF attachments *(Optional) Use ZeptoMail templates if required 3. Workflow Automation *Create an end-to-end workflow: *Google Sheets (already exists) https://docs.google.com/spreadsheets/d/1M8RzdS9-uH5Gi3y32ZwGqX7JVfxR8Guvq7JwPduOpWA/ *Autocrat generates a PDF from Google Sheets *n8n detects when the PDF is generated *n8n downloads the PDF from Google Drive *n8n sends a transactional email via ZeptoMail with the generated PDF attached which ensures delivery in inbox and should not reach to spam folder *Update Google Sheet with email status to avoid duplicate sends 4. Reliability & Logic *Proper status checks (e.g., PDF generated, email sent) *Idempotent workflow (no duplicate emails) *Error handling and logging Future Scope (Not required immediately, but should be supported) *Ability to extend the workflow to WhatsApp messaging in the future using APIs (WhatsApp Business Cloud / Twilio / Gupshup) Required Skills *n8n (self-hosted) *Docker & VPS server setup *PostgreSQL *Google Sheets, Google Drive API *HTTP APIs & Webhooks *ZeptoMail API *Basic DevOps & security knowledge Deliverables *Fully working self-hosted n8n setup *End-to-end automated workflow as described *Basic documentation / handover instructions *Workflow tested with multiple concurrent executions