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Email Suppressions

The suppression list prevents your account from accidentally re-sending to addresses that have hard bounced, unsubscribed, or filed a spam complaint.

Automatic Suppression

Mailofly automatically adds recipients to your organization suppression list when:
  1. An address generates a permanent hard bounce (5.1.1 User unknown).
  2. A recipient clicks an unsubscribe link.
  3. A recipient files an abuse complaint through a feedback loop (Gmail, Yahoo, Outlook FBL).
Attempting to send to a suppressed address will immediately fail locally without damaging your external IP reputation.