I need an ERPNext expert to get our email fully operational inside the system and make sure customers automatically receive a receipt as soon as a payment entry is validated. Project Overview We are looking for an experienced ERPNext developer/administrator to: Properly configure outgoing email in our ERPNext. Implement automatic emails for receipts (Payment Entry), including attaching a PDF receipt. Our ERPNext is already running; we need someone to configure and automate the email workflows cleanly and reliably. 1. Email Configuration in ERPNext Set up Email Domain and Email Accounts (outgoing + optional incoming) in ERPNext. Configure SMTP (google email) Make sure system emails (password reset, notifications) work correctly. Verify emails are not going to spam (basic SPF/DKIM/DMARC guidance is a plus). Automatic Email for Receipts (Entry Payments) When a Payment Entry is validated and marked as paid, ERPNext should: Automatically send an email to the customer’s email on Contact Information Attach the corresponding PDF document Payment Entry (receipt). Use a custom email template. Testing & Documentation Test with at least 3–5 sample customers/documents. Provide a short step-by-step guide (PDF or doc) on: How to change the email template. How to enable/disable the automation. How to add email address as copy (internal use) Where to check logs if emails fail (Email Queue, Error Logs, etc.).