How does engagement influence filtering?

Engagement is one of the most powerful signals in modern email filtering. How recipients interact with your mail directly influences how filters treat future messages.

Positive engagement signals like opens, clicks, replies, and moving messages to inbox teach filters that recipients value your content. This improves your sender reputation and inbox placement.

Negative engagement signals like spam reports, deletes without reading, and consistent ignoring teach filters that recipients do not want your mail. This degrades reputation and pushes messages toward spam.

Engagement operates at both individual and aggregate levels. Your personal engagement history affects your filtering. The collective engagement from all recipients affects the sender's overall reputation.

Engagement is the vote that each recipient casts about your mail. Enough positive votes, and the filter opens the gates willingly.