How would you get 100 subscribers for your newsletter without using your own network?

I'm running an experiment with https://www.getrevue.co/profile/first20hires to see if I can hack my way to my first 100 newsletter subscribers without just asking friends and family.

The newsletter follows early startups hiring for their first 20 roles to help folks find opportunities at tomorrow's rocketships.

My first strategy is to try to write content that's so well written that featured founders want to share / retweet the content themselves. In this way, I hope to piggy back off their own audiences.

What else might you try?