This should be true. Mass sending emails still costs.

From my point of view, you still need him to establish a business.

His perspective still matters since the app is a derivative from his use case which leads to me believing that he still has the insider business view that can contribute to the growth.

If he has a habit of just ghosting partners, it’s not good. It deserves a serious talk so that you know what’s his intention and mindset towards this business. If he’s no longer interested, then it’s good to part ways. If he’s having issues, well, cofounder issues. Etc etc

Last but not least, if you are looking for potential partner, let me know. I’ve been a software engineer/ web app developer for a dozen years now, graduated with a computer science degree. Ping me.

I’d also suggest to set the terms right with your partner and some milestones, at what point do what.

How did you find the start up partners, btw?