There are pros and cons to having a blog with a newsletter. On the pro side, newsletters can help keep readers up-to-date on what is happening on your blog.
They can also provide you with an opportunity to promote your latest posts and to solicit feedback from your readers.
On the con side, newsletters can be time-consuming to create and manage. If your blog is not well-established, it may be difficult to generate enough subscribers to make a newsletter worthwhile.
Additionally, if your blog is associated with a company or organization, it may be inappropriate to offer subscribers promotional content unrelated to the mission of that organization.
Ultimately, whether or not a blog should have a newsletter is up to the individual blog owner. If you are happy with the way your blog performs without a newsletter, you can skip this step.
If you would like to add one, think about what benefits it could provide for your readers and decide if those benefits are worth the effort and expense involved in creating and maintaining it.