A domain that's received a manual search engine penalty in the past can carry lingering consequences that outside buyers should try to identify before purchasing.
Understand That Manual Actions Aren't Always Publicly Visible
Unlike some algorithmic effects, a manual action's history isn't always something an outside buyer can directly confirm before purchase.
Look for Indirect Evidence in Search Visibility and Content History
A domain that's completely absent from search results despite an otherwise substantial link history can be an indirect signal worth investigating.
Factor This Uncertainty Into Your Overall Risk Tolerance
Given the difficulty of fully confirming manual action history, weigh how much risk you're comfortable accepting into your purchase decision.
Next step: Use the Wayback Expired Domains to check a domain's archived content for signs consistent with a past penalty.