Hi My mail inbox & sent file are together about 3gb. Now i assume that everytime few more emails are mb's are added to these inbox & sent files, timemachine will backup a new version of these files. after a few weeks i might have 10 x 3gb of unecessary duplicates. It's a pity that apple didn't include some more options like "backup this file only every 10th time" or "backup and replace same file" for particular files. What do you suggest?