Block or unblock senders in Outlook - Microsoft Support
If you want to block an email address, enter the email address in Blocked senders and select Add. If you want to block all email from a domain, enter the domain name in Blocked domains and select Add.
Block a mail sender - Microsoft Support
As part of its filtering criteria, the Outlook Junk Email Filter checks message senders against lists of email addresses and Internet domains designated either as safe or to be blocked. You can customize the filter to block or allow senders or different message types.
Block or allow (junk email settings) - Microsoft Support
Use the Block or Allow settings in Outlook Web App to help control unwanted and unsolicited email messages.
Block or unblock a sender - Outlook for Mac - Microsoft Support
Stop receiving email from someone by adding his or her email address to your blocked senders list. You can also unblock an email address from your blocked senders list.
Filter junk email and spam in Outlook - Microsoft Support
If you want to block an email address or domain, select Blocked senders and domains and select Add blocked sender. Enter the email address you'd like to block, or if you want to block all email from a domain, enter the domain name.
unblock Outlook emails from a specific sender - Microsoft Support
unblock Outlook emails from a specific sender Add email addresses and domain names that you trust to the Safe Senders List. On the Home tab, in the Delete group, click Junk , and then click Junk E-mail Options.
Phishing and suspicious behavior in Outlook - Microsoft Support
To actually block a sender, add the sender to your blocked senders list. For more information, see Block senders or mark email as junk in Outlook.com.
Receiving email from blocked senders in Outlook.com
Blocking someone stops their email from coming to your mailbox. If email from a blocked sender still appears in your Inbox, the sender might be: Changing their email address. Create an Inbox rule to pick up common words in your Inbox email and move them to the Deleted Items folder. Learn how to Manage email messages by using rules in Outlook.
Show, hide, and view the Bcc (blind carbon copy) field in Outlook …
Within classic Outlook, create a new email message or reply to or forward an existing message. If the message you're composing opens in a new window, select Options > Bcc . If the message you're composing opens in the Reading Pane, select Bcc from the ribbon.
Unblock my Outlook.com account - Microsoft Support
If your Outlook.com account has been blocked, follow the instructions in this article to unblock it.