• List mails in the queue:

    $ exim -bp
    
  • View headers of a mail:

    $ exim -Mvh <mail-id>
    
  • View body of a mail:

    $ exim -Mvb <mail-id>
    
  • Remove a mail from the queue:

    $ exim -Mrm <mail-id>
    
  • Remove all frozen mails in the queue:

    $ exiqgrep -z -i | xargs exim -Mrm
    

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