Ask HN: How to find a sponsor for 1442 Designers who want remote job newsletter

Hey HN!

I am a maker of Google Spreadsheet based community for designers who are looking for remote job positions. There are 1442 designers in my everyday update newsletter (OR ~40%) and minimum 30 online all day long at any given time in Google Spreadsheet with handpicked remote job positions.

What I already do? 1. Write to company’s account in Twitter 2. Write to company by email 3. Write to people from that company on Linkedin

I'm looking for a sponsor. Any suggestions how to do it effectively?