Upload your .eml email file to the EML Translator, where the system immediately extracts every textual component—including the subject line, plain‑text body, rich HTML body, and any embedded metadata—while preserving all attachments, inline images, and custom MIME headers. The extracted text is then sent to a state‑of‑the‑art multilingual AI model that generates a translation in the language you select, carefully maintaining the original formatting, style tags, and link structures. After the AI returns its output, a multi‑stage validation engine checks the result for fidelity: it confirms that the translation truly reflects the source content, verifies that no characters or data have been dropped, and ensures that the email’s structural integrity—including boundaries, encoding schemes, and attachment references—remains unchanged. If any discrepancy is detected, the translation is automatically re‑run until the validation passes, guaranteeing a reliable final product. Once validated, the translated text is written back into a new .eml file using the Aspose.Email library, which guarantees that every original attachment, header, and encoding is retained exactly as in the source file. The resulting translated email can be downloaded instantly and opened in any standard email client—Outlook, Thunderbird, Apple Mail, Gmail via import, or any other program—without any loss of formatting or functionality; the only difference is the language of the visible content. Throughout the process you can provide feedback on the translation quality, flag any issues, and help improve the AI prompts and validation rules for future users. All data processing occurs on secure servers with end‑to‑end encryption, and uploaded files are automatically deleted from temporary storage within minutes after the download link is generated, ensuring your privacy. The application is optimized for performance, handling typical corporate‑size .eml files of up to 25 MB in under 30 seconds, and scales gracefully for larger archives through batch processing. In addition to subject and body translation, upcoming features will enable translation of custom headers such as "X‑Priority" or "X‑Sender", as well as OCR‑based translation of text embedded in attached images, making the tool suitable for complex multilingual correspondence. Whether you are a global sales team needing quick access to foreign client inquiries, a legal department reviewing contracts received via email, or a traveler wanting to keep personal communications understandable, the EML Translator eliminates the tedious copy‑paste routine and delivers a ready‑to‑use translated email that behaves exactly like the original in any client. By leveraging the proven Aspose.Email library and advanced AI validation, the service provides confidence that no data is lost, no formatting is broken, and the translation quality meets professional standards.