migrating kmail between systems

On some systems mail is found under $HOME/.Mail, on some others under $HOME/Mail and - yet on others - I’ve found it even under $HOME/.kde/share/apps/kmail. Regardless of where the source (to be copied from) directory of email is, the important thing is to have the variable “folders”, from $HOME/.kde/share/config/kmailrc point to the target directory.
The only [...]

postfix misc. commands

# postqueue -p = list messages
# postsuper -d <msg> = delete
# postsuper -d ALL = delete all
# postsuper -h <msg> = hold
# postsuper -H <msg> = put back in the queue
# postsuper -r ALL = requeue ALL messages
# postcat -q <msg> = display
# mailq = display queue