1) With the help of newsletters, you can automatically inform a person that an order has been made/ a package has been sent, etc. These are service mailings that save the time of the call center.
2) Thanks to mailings, you can form loyalty — that is, tell about yourself in such a way that readers form such an image of your company / blogger in their minds so that people can trust and love you. This can be achieved with the help of useful content. For example, if your service is
online accounting for entrepreneurs, then you can send an explanation of the new tax regulations in human language in the newsletter.
And if you write on behalf of a blogger who is an expert in copywriting, you can send a new text creation tip once a week. Sometimes such mailings are used only for loyalty. For example, when you send them only to your customer, but you have nothing to sell and your task is to keep this customer with you for a long time. Sometimes selling elements are inserted into them.
3) Mailings can be sold. Moreover, you can sell in a variety of ways. In large online stores,
email newsletters are configured so that you receive instant emails about the products you have just been interested in on the site.
For example, on the Booking website — if you look for (not even book) hotels in Prague, then after a while you will receive a newsletter about Prague. Or you can arrange a closed sales club in the form of powder and send letters with discounts to a limited loyal base a couple of times a week. And you can also use a chain of emails instead of a separate newsletter.