Does low bounce rate always mean good list hygiene?

Myth: Low bounce rate equals clean list.

Reality: Low bounces can hide problems:

Silent acceptance:

Some invalid addresses accept mail. Delivered to spam or blackhole. No bounce, but no value.

Spamtrap risk:

Spamtraps often accept silently. No bounce, severe reputation damage. Low bounces with spamtraps is dangerous.

Engagement matters:

Addresses may be valid but ignored. No bounce, no engagement. Reputation damage from ignores.

Complete picture:

Bounce rate is one metric. Engagement rate matters more. Spam placement invisible to bounces. Spamtraps do not bounce.

Low bounces necessary but not sufficient. Combine with engagement and placement data.