You can Search for the emails and remove them or set up Sort Rule to do it automatically.
Search - You can automatically move emails from any sender to specified folder
As a first step create new folder e.g. “Smith” if needed
Click “manage folders” link at the bottom of left menu
Click new folder button
Type the new folder name in box
Search the emails and move them to folder
Click arrow at the right of “Search email” button at the top right corner of the webmail and select Advanced search
Fill in search criteria –e.g. all emails that were sent by ‘Smith’ and click search
Select and move emails – select all found emails
And move them to corresponding folder.
Wait while emails are being transferred
Sort Rule creation
Go to Settings|Sort rules|Create new rule
Create and save&apply new rule to Crawler folder
Organize repetitive emails – if you are receiving many emails with the same subject move those emails to corresponding folder the same way as described in steps above. Just process the repetitive subject instead for the repetitive sender