Here are some Important commnads :-
==== REMOVE MAILS BY ID ====

/usr/sbin/exim -v -Mrm (MAIL ID HERE)

==== LIST QUEDED MAILS ====

/usr/sbin/exim -bp

==== OUTPUT NUMBER OF QUEDED MAILS ====

/usr/sbin/exim -bpc

==== DELETE FROZEN MAILS ====

/usr/sbin/exim -bp | awk ‘$6~”frozen” { print $3 }’ | xargs exim -Mrm

==== DELIVER FORCEFULLY EMAILS ====

/usr/sbin/exim -qff -v -C /etc/exim.conf &

==== FREEZE MAILS FROM SENDER ====

/usr/sbin/exiqgrep -i -f (MAIL ADDRESS HERE) | xargs exim -Mf

==== REMOVE MAILS FROM SENDER ====

/usr/sbin/exiqgrep -i -f (MAIL ADDRESS HERE) | xargs exim -Mrm

Count how many frozen mails in the queue

exim -bpr | grep frozen | wc -l

Delete frozen mails in the queue

exim -bp | awk ‘/frozen/ {print $3 }’| xargs exim -Mrm

Delete mails older than 1 day

exiqgrep -o 86400 -i | xargs exim -Mrm

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Enjoy Linux !!!