cb-wizard
How can we mass delete selected email from the user cur folder?
Your issue may simply be too many messages in the one folder, so you could move them to other IMAP folders eg split the quantity up into different folders so you don't have the same issue again. Use the command line and/or midnight commander (mc) to quickly do this.
If you really want to delete messages, and there are some messages you wish to keep, you should manually move these to another folder first eg using mc
As I understand it, qmhandle works on the mail queue, not on mail in user folders.
To delete
Use the command line
Login as root (or user with root privileges)
cd /home/e-smith/files/users/username/Maildir/cur
check the file listing
ls -al
delete all the files without confirmation - BE CAREFUL
rm -f *
Alternatively use midnight commander to list/view/tag/delete the files
mc
then F9/File/select group/*/Enter to tag all files
then F8 to delete all the tagged files
You can use mc to move files from folder to folder in a similar way, after tagging use F6 to move (instead of F8 to delete), and have the source location in one window and the destination location in the other window of mc.