How do shared pool senders affect your domain reputation?

Shared pool dynamics primarily affect IP reputation, not domain reputation:

Your domain reputation builds based on your sending behavior regardless of which IP sends your mail. Domain signals follow your brand, not your infrastructure.

However, severe pool contamination can create indirect effects. If the shared IP gets blocklisted, your mail may not deliver at all, preventing positive signals from accumulating.

Some providers may apply elevated scrutiny to all mail from problematic infrastructure, increasing filtering even for authenticated domain senders.

Choose ESPs that actively manage shared pools, removing bad actors quickly before contamination spreads.

Shared pools are like convoy escorts. Your flag is independent, but sailing with disreputable ships may cause harbor authorities to inspect all arriving vessels more carefully.