What metrics define “healthy sender reputation”?

Healthy sender reputation metrics include inbox placement rates above 90%, complaint rates below 0.1%, bounce rates below 2%, and engagement rates appropriate for your industry and content type.

Provider specific indicators matter: High or Good reputation in Gmail Postmaster Tools, clean status in Microsoft SNDS, and no blocklist appearances. Certification status from CSA or Validity indicates recognized good standing.

Healthy reputation is relative to your peer group. A transactional sender should have higher engagement than a promotional sender. Compare against appropriate benchmarks for your email type.