eBay Email Extraction & Verification Script

As a seasoned entrepreneur managing a range of e-commerce accounts, I have an imminent need for a diligent developer. You should have experience writing scripts in Python, Java or PHP. This role will involve creating a program that:

- Extracts email addresses from a provided list
- Checks registration status of these emails on eBay

In cases of unregistered emails on eBay, the script should discard them, only keeping authenticated addresses. I need the output to be a text file containing all verified email addresses. A prowess in crafting efficient and secure software is critical for this role. You can expect to handle sensitive data, therefore a high commitment to security protocols is paramount.

Ideal skills include a strong understanding of the chosen programming language, a knack for writing high-security scripts, and familiarity with eBay's interface and functionalities. Experience in creating similar extraction and verification scripts will be an added advantage. I look forward to collaborative, innovative solutions.