Block List Outlook Access

If you've added an address to your block list but still see their mail, it's usually because:

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| Platform | Behavior | |----------|----------| | | Full control; easiest to manage list via Junk Email Options → Blocked Senders . | | Outlook Web (OWA) | Works, but editing list is clunky (Settings → Mail → Junk email). Syncs with desktop. | | Outlook Mobile (iOS/Android) | Can block senders, but no direct list management UI. Syncs via Exchange. | | Outlook for IMAP/POP | Block list is local only – useless if you check email on another device. |

| Alternative | Why | |-------------|-----| | | Create server rule to delete emails from specific senders before they reach mailbox. | | Third-party spam filter (Proofpoint, Mimecast, SpamTitan) | Blocks at gateway; much more powerful. | | Outlook Rules + “Delete it” | Create a rule: “From [sender] → Delete permanently” (works but runs client-side for IMAP/POP). | | Power Automate | Can auto-delete from Junk folder, but overkill for most. | If you've added an address to your block

Use the to remove a sender or the + Add button to manually type in a new one. On Outlook Desktop (Classic) Go to the Home tab. Click Junk in the Delete group. Select Junk E-mail Options .

| ❌ Weaknesses | Details | |--------------|---------| | | Blocked emails go to Junk folder , not trash. You still have to empty Junk manually or via retention policy. | | No “block and delete” option | Cannot automatically delete without going to Junk first. | | Doesn’t block at server level | On IMAP/POP accounts, the block list only works inside Outlook—other email clients (phone mail app, Thunderbird) ignore it. | | Can be bypassed | If sender changes email address slightly (e.g., spammer2@example.com ), you must block again. | | No regex/wildcard support | Can’t block *@spamdomain.* or partial patterns. | | Spam filter overrides | If Outlook’s junk filter is set to Low or No Automatic Filtering , blocked senders may still appear in Inbox. | | No reporting mechanism | Unlike Gmail, blocking in Outlook doesn’t train Microsoft’s global spam filter. | | | Outlook Web (OWA) | Works, but

| Feature | Outlook (Blocked Senders) | Gmail (Block) | Apple Mail | ProtonMail | |---------|--------------------------|---------------|------------|------------| | Server-level block | ❌ No | ✅ Yes | ❌ No | ✅ Yes | | Auto-delete option | ❌ No | ✅ Yes (filter) | ❌ No | ✅ Yes | | Wildcard domain block | ✅ Yes (entire domain) | ✅ Yes | ❌ No | ✅ Yes | | Syncs across devices | ✅ Only on Exchange/365 | ✅ Yes | ✅ Via iCloud | ✅ Yes |

If you are getting bombarded by a specific company using multiple different email addresses (e.g., sales@annoyingcompany.com , support@annoyingcompany.com ), blocking individual emails won't work. You need to block the entire domain.