Initial commit: Cross-platform email migration script

- Add Python script for IMAP-to-IMAP email migration
- Support for preserving folder structure, flags, and dates
- Configurable via environment variables (.env file)
- Batch processing with progress reporting and error handling
- SSL/TLS support for secure connections
- Folder filtering capabilities (include/exclude)
- Comprehensive logging system
- Works natively on Linux and macOS without dependencies
- Include .env.template for easy setup
- Add comprehensive README with setup instructions

README.md

@@ -0,0 +1,20 @@
+# Email Migration Script
+
+A Python script to migrate emails from one IMAP account to another, preserving folder structure and metadata.
+
+## Quick Start
+
+1. Edit .env file with your email credentials
+2. Run: python3 email_migration.py
+
+## Requirements
+- Python 3.6+ (pre-installed on Linux & macOS)
+- No additional dependencies required
+
+## Configuration
+Edit the .env file with your email account settings.
+
+## Important Notes
+- Use app passwords, not regular passwords
+- Test with a small folder first
+- Check email_migration.log for detailed logs