Display Number of mails in queue :
exim -bpru | wc -l

Display mails :
exim -bpru | awk ‘{print $3}’

Remove mails from queue :
exim -bpru | awk ‘{print $3}’ | xargs exim -Mrm

kill nobody process
ps aux | grep nobody | awk ‘{print $2}’ | xargs kill -9

exim -bp
mailq — The mailq is relevant as it gives your the email IDs.
exim -M emailID
force delivery of one message
exim -qf
Force another queue run
exim -qff
Force another queue run and attempt to flush frozen messages
exim -Mvl messageID
View Log for message
exim -Mvb messageID
View Body for message
exim -Mvh messageID
View Header for message
exim -Mrm messageID
ReMove message (no errors sent)
exim -Mg messageID
Give up and fail message, message bounces to sender