Config Option in Scripts->Before (After) Filter Action

It would be useful to have a config option which run a program or a script after the filter action was performed. I'll explain why it might be useful:

Usually i read and answer all mails in the incoming folder and use then the Filter to move that mail in the appropriate folders. Sometimes my mashine crashes badly. After a restart i must rescan all folders in which a mail was moved. With the new added command 'FLUSHINDEXES' it is possible to flush the indexes after a filter action automatically. Now i use a scipt like:

ADDRESS 'YAM'
'MAILFILTER ALL'
'FLUSHINDEXES'

but i must use a menu entry in yam to call the script. A better solution would be such config option and call only 'FLUSHINDEXES' in the script.

For completness a option before a filter action is made could be useful too because a user can add an own requester which ask if he really want to filter the data also if only one mail is selected.

BTW: Thanks again for 'FLUSHINDEXES'.

Moved from SF:
​https://sourceforge.net/tracker/?func=detail&aid=2896979&group_id=13560&atid=363560