I have a newsletter modal in my own technical blog (usually placed below the article and above the comment box), and usually I attach a gift to bribe user to su

I have a newsletter modal in my own technical blog (usually placed below the article and above the comment box), and usually I attach a gift to bribe user to subscribe (cheatsheet, completed project code etc) . Conversion rate from visitor to subscriber is around 1.5% , and conversion from subscriber to customer (once in a while I email them that I have technical ebook solving X problem) is around 4%! I avoid spammy popup modal and just place the form at the end of article, and offering relevant CTA usually. And this mode of marketing worked very well for me