Clean and Validate 300k Email List

I need assistance to clean and validate a 300,000 email list within 24 hours. The goal is to remove invalid emails, duplicates, and spam-prone entries to ensure a high-quality list with zero bounce rate. Precision and adherence to standards are critical.

Please ensure that the final output is a 100% valid email list, free of bad syntax, bad domains, and other defects. I expect the cleaned list to be delivered within the given deadline.

When applying, share examples of past work related to email validation or cleaning to showcase your expertise.