The RefreshList Email Health Index

The RefreshList Email Health Index is a planned research format describing list quality within a defined sample. Future reports would distinguish duplicates, invalid outcomes, unknowns, and supported address signals. This preview defines reporting fields but does not present demonstration values as measurements or a representative assessment of the email market.

Last updated 2026-09-14. Read the scope and limitations before applying a result.

Key points

Format preview only.
Use explicit denominators.
No invented composite score.

Detailed explanation

A real release needs population, selection period, exclusions, and measurement method. Missing disposable or catch-all assessments must not count as clean. Coverage changes must accompany trends.

Example

Duplicate rate uses source rows; an invalid-outcome rate uses a clearly defined checked population.

How RefreshList handles it

All preview measurements are marked not collected. There is no manufactured chart.

Limitations

Publication requires genuine observations and a privacy review; no sample size, prevalence, trend, or ranking is asserted.

Methodology and sources

Product behavior is described from the current RefreshList implementation and provider contract. Protocol context should be checked against the applicable standards and provider documentation. This page does not create a benchmark or certification.