Tips for growing a newsletter as a feature of a community platform?

Hey all,

I've been building madepublic.io for the last month or so and it's been in beta for about 2 weeks.

So far there are 80 or so users and 45 projects listed which is pretty good to start with!

I'm planning on adding more community like features soon like commenting, following projects, notifications (these should be released within the week actually) etc. But I'm also thinking of adding a newsletter that anyone (not just authorised users) can sign up for to get notified of the projects with the most public interest.

Aside from providing an email field for users to provide on the homepage (and front and center) - what else could I do to promote growth here?

Thanks!