Auto-translate Incoming Gmail Emails to English with OpenAI GPT-3.5

# Auto-Translate Incoming Emails to English This workflow automatically detects the language of every **new Gmail email** and translates non-English messages into English. The translated email is forwarded to your inbox with a clear [TRANSLATED] subject tag, and a label is added for easy filtering. --- ## How It Works 1. **Gmail New Email Trigger** - Listens for **new unread emails** in your Gmail inbox. - Captures subject, sender, body text, and metadata. 2. **Normalize Email Data** - A **Code node** extracts the raw content from the email. - Strips HTML, normalizes plain text, and prepares data for language detection. 3. **Detect Language (OpenAI)** - Uses **OpenAI GPT-3.5-turbo** to detect the email's language. - If the language is English, the workflow ends. - If not, continues to translation. 4. **Translate to English** - OpenAI translates the email body into clear English. 5. **Prepare Translated Email** - Builds a forwarded email containing: - Original sender & subject - Received date - Message ID - Translated content (with formatting) 6. **Send Translated Email** - A **Gmail node** sends the translated message to your inbox. - Subject is prefixed with `[TRANSLATED]` for easy recognition. 7. **Add Translated Emails Label** - Automatically tags the original message in Gmail with **Translated Emails**. - Helps you filter all auto-translated emails later. --- ## Setup Steps ### 1. Gmail Label - In Gmail, create a new label: Translated Emails - Or update the label in the final Gmail node. ### 2. OpenAI API Key - Get your key from [platform.openai.com](https://platform.openai.com). - Add credentials in n8n. - Uses **GPT-3.5-turbo** (low cost, reliable). ### 3. Gmail OAuth - In n8n, connect your Gmail account. - Requires **read/modify** permissions. --- ## Example Output **Subject:** `[TRANSLATED] Meeting Proposal` **Body:** AUTO-TRANSLATED EMAIL (Original Language: ES) From: juan@example.com Received: 2025-08-29 Message ID: 123456abcdef TRANSLATED CONTENT: Hello, I wanted to ask if we can schedule the meeting for next week. “This email was automatically translated by n8n workflow. With this workflow, every foreign-language email is instantly translated and delivered to you in English - no manual copy-pasting into Google Translate again.