How do “move to inbox” or “reply” actions improve reputation?

Moving mail from spam to inbox and replying are among the strongest positive signals a recipient can send. Both represent deliberate actions that explicitly contradict negative filtering decisions.

When a recipient rescues your message from the spam folder, they are directly telling the provider that the filtering decision was wrong. This feedback trains the system to trust your mail more in the future, both for that recipient and potentially across their user base.

Replies indicate genuine two-way communication. They transform your messages from broadcast announcements into conversations. Providers heavily weight reply signals because spam almost never generates authentic replies.

These actions are like the port's most respected merchant vouching for your cargo. When they publicly correct the inspector's mistake and invite you to their warehouse, authorities learn to trust your future arrivals.