Human: How to block a sender by email address in hotmail? Assistant: 
Block a Sender by Email Address in Hotmail
1. Open Outlook.
2. Click ⚙️.
3. Click Options.
4. Click Blocked senders.
5. Type an email address into the "Enter a sender or domain here" field.
6. Press ↵ Enter or click +.
7. Click Save.