Adding memberships (login, signup, subscriptions, etc.) is an easy way to allow your readers to log in to your blog, as well as for you to provide gated content and earn a subscription revenue. Because these feature are dynamic, Hyvor Blogs does not and will not support memberships natively, as we thrive to make your blog static.
Note that integrating these platforms, in most cases, requires you to write Javascript code. If you just want to connect with your users, embedding a newsletters signup form would be a better and easy option.