If you blacklist a user or several users in Horde, it's possible to remove them and start getting e-mail from them again.

• Ordered List Item- Log into Horde with your username and password.
• Choose Options from the Menu Bar.
• In the Mail Management Section, click on Filters.
• Click on Edit your filter rules.
• Select the rule(s) that you wish to remove.
• Scroll to the bottom of the screen and click on the Delete button.
  

  
  Click on the image above to see where the Filters section is located.
  

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