Newsletters and newspapers are very different types of publications. Newsletters are typically sent out once a month, and usually have a shorter content length than newspapers. Newspapers, on the other hand, are typically published every day and have a much longer content length. The main difference between newsletters and newspapers is that newsletters are typically written for a specific audience, while newspapers are generally intended for a wide audience.
Another difference between newsletters and newspapers is that newsletters are typically subscription-based, while newspapers are generally not subscription-based. Lastly, newsletters are typically written in a more casual tone than newspapers.