1. View all emails in the mailqueue, with destination and mail ID exim -bp
2. If you have emails older than a day in the mail queue which don’t look like they’ll ever be delivered you can remove these; exiqgrep -o 86400 -i | xargs exim -Mrm
3. View all email’s in the queue from a specific address; exiqgrep -f
4. Remove all messages which are in a frozen state; exiqgrep -z -i | xargs exim -Mrm
5. Remove all messages from a specific sender; exiqgrep -i -f | xargs exim -Mf