Help With Downloading File

[yuvarajmani]

Hi,
   Im using Roundcube mail for a while and i love to use it. i need a small help in downloading the attachment. how to set the destination directory for the attachment files. for example i planned to download each mail based on the use name ie when 'a' sends a mail and and if i download it , im just trying to download it to 'a' directory. i tried my level best and im new to php development. can u pls help me or suggest me how to do that.

Thanks in Advance
Yuvaraj