List Of Blocked Senders In Outlook -

"Ah-ha!" she thought. "This is exactly what I need."

| Issue | Explanation | |-------|-------------| | | Sender may be spoofing addresses, or Outlook’s filter is disabled. Check: Junk Email Options → Options → “No Automatic Filtering” will ignore block list. | | Blocked domain not working | If using @domain.com , ensure no extra spaces. Also, if sender uses a different sending domain, blocking fails. | | List size limit | Outlook desktop can handle ~1024 entries comfortably; exceeding may cause performance issues. | | Sync across devices | If using POP/IMAP without Exchange, block list is local to that device only. | | Blocked senders reappear | Could be due to Group Policy, roaming profiles, or add-ins re-adding entries. | list of blocked senders in outlook

Exchange and Microsoft 365 accounts sync this list across your web, desktop, and mobile apps. How to Unblock a Sender "Ah-ha