High-Volume Email Sending Solution

I'm looking for a developer to create a website or App or Program -based tool that allows me to send out 10,000 - 20,000 emails daily. These emails must land in inboxes and not go to spam.

Key Requirements:
- Ability to upload Excel spreadsheets with email addresses.
- Robust delivery system to ensure high inbox placement.

Ideal Skills and Experience:
- Proven experience in developing email delivery systems.
- Strong understanding of email deliverability and anti-spam measures.
- Proficiency in web development and database management.

Please include past work examples in your application.