Mailgun Bulk Email Validation Tool
python validate_emails.py --help
usage: validate_emails.py [-h] -t INPUT_FILE [-o OUTPUT_FILE]
Validate emails using Mailgun Bulk API
options:
-h, --help show this help message and exit
-t, --input-file INPUT_FILE
Input file containing emails (one per line)
-o, --output-file OUTPUT_FILE
Output file for valid emails