My milestones seem to be like London buses. You wait ages and then three come along at once! Just this morning my email list tipped over the 1000 subscriber mark.
I think having a whole page on my site dedicated to getting email subscribers is certainly helping a lot. You might think this is basic, but I'm constantly surprised by how many sites don't have this.
The benefit is that it allows you to link out directly to your email list from other websites.
For example, whenever I post one of my case studies to Reddit or do a Guest Blog, I'll say If you like the article you can join the email list here
Or on my Marketing Examples twitter bio I say, Get one marketing tip a day 👉https://marketingexamples.com/subscribe
This converts much better than just saying, "Oh, if you like the articles, go onto my website, scroll all the way to the bottom and there should be an email box for you there! ..."
I noticed James Clear does the same thing on his twitter actually, directing people straight to his email newsletter instead of his website.