What type of domains are they?

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Trust: one of the biggest advantages of this communication channel. Email is more personal, it is the modern version of traditional letters. Also, as we will see in the next point, if it adds a lot of value, it improves your brand image.
Added value : A marketing strategy is based on this. Our content has to attract visitors and make them become customers. A good way to send all that information is through email.
Low cost : It doesn't involve high costs. In fact, until you have a large number of subscribers, you can work with the free versions of some tools.
Loyalty – You can use email to send special or VIP content to your customers.
Web traffic: directly from the newsletter, you can send your subscribers to your content or products.
Return on Investment (ROI) : We can tell you in advance that this number will surprise you. According to a study by the Direct Marketing Association (DMA), the ROI is 122%, four times higher than with any other communication channel.
Stock rotation: You can send information about lesser-known or harder-to-sell products.
Segmentation: Email marketing tools can automatically segment your database based on user interactions esinc email list with emails. This will also help make your campaigns more effective.
Sales: You can send targeted sales emails to promote new products. But be careful, this doesn't mean that all our emails have to be salesy. That wouldn't work at all.
After seeing all these advantages, it should be quite clear that it is necessary to send a newsletter to your subscriber list.

Now it's time to put it all into practice!

How does a Newsletter work and what do you need?
This is easy. To start sending newsletters to your subscribers you need three things:

A strategy.
A list of subscribers and customers.
An email marketing tool.
The strategy
This is where 99% of stores fail. People subscribe to a blog newsletter, and the store does nothing but send out discounts, deals, and promotions.

Most likely, after the second newsletter, the open rate will start to decline.