[Docusaurus blog documentation](https://docusaurus.io/docs/blog) - [ ] add a [subscribe button to sidebar](https://heromodeapp.com/blog/docusaurus-blog-customizations#add-subscription-button-to-blog-sidebar) - [ ] [protect button with hcaptcha](https://www.scien.cx/2022/01/13/building-email-signup-form-for-docusaurus-with-hcaptcha-cloudflare-pages-and-mailgun/)
