What is one of the main characteristics of unsolicited digital communication commonly known as spam?

One of the main characteristics of unsolicited digital communication, commonly referred to as spam, is that it is sent in bulk to many recipients. This feature distinguishes spam from legitimate communication methods, where messages are typically targeted and personalized based on the recipient's preferences or consent.

Spam emails or messages are usually not tailored to individual inboxes; instead, they are generated and sent en masse without regard for the recipients' consent or interest. This bulk nature not only results in a high volume of unwanted messages but also facilitates the potentially harmful strategies often employed in spam, such as phishing attempts or advertising for dubious products.

In contrast, effective and ethical digital communication usually involves obtaining consent from the user and addressing their specific needs or interests, which is absent in spam communication.