Every marketing email has a particular purpose and in most cases, it is getting a conversion from the receiver of the message. The best and most efficient way to reach this goal is to add call-to-action line in your content. You should not wait for the person to guess what to do. Show the opportunity to get benefits from the new offers, discounts, features, blog posts and so on.
More info about this topic read on the proofy blog(https://proofy.io/blog/)
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