Block Outlook email from a specific sender

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Hello,

Select a different account.

You have multiple accounts

Choose the account you want to sign in with.

Automatically move incoming messages from specific senders to the Junk E-mail folder.

On the Home tab, in the Delete group, click Junk, and then click Junk E-mail Options.
On the Blocked Senders tab, click Add and type a specific email address (such as someone@example.com) or an internet domain (such as @example.com or example.com).