When corresponding via email, which practice does not follow proper email etiquette?

Using the "Reply-to-All" feature consistently does not align with proper email etiquette because it can lead to unnecessary clutter in recipients' inboxes. This feature is intended for situations where all parties in the email thread need to be included in the conversation. When individuals repeatedly use "Reply-to-All" without considering whether everyone genuinely needs to receive their response, it can overwhelm recipients with irrelevant information and disrupt communication efficiency.

Proper email etiquette emphasizes mindfulness in communication. Keeping emails brief and to the point helps recipients quickly grasp the essential information, while reading one's email out loud can aid in catching errors or awkward phrasing before sending. Ensuring attachments are relevant and enhancing the message also contributes to clear communication, helping to maintain professionalism and clarity in email correspondence. Therefore, employing the "Reply-to-All" indiscriminately undermines these principles, making it clear why this practice stands out as improper etiquette in email communication.