You could emulate that behavior by setting up filters in Mail.app on OS X, that would delete messages older than X days, for what it's worth.
Re:Sparrow for iPhone
by martingordon on Thursday March 15, 2012 @10:05AM
(#3708473)
Wouldn't that also delete the from my IMAP server (in my case, Gmail)? I'd also be worried about deleting the messages from my [All Mail] folder, which is what I have a real issue with (my inbox is rarely very large).
Re:Sparrow for iPhone
by goddamnhippie on Thursday March 15, 2012 @08:20AM
(#3708050)
Sparrow for Mac has the option to chose to download messages on demand. It's on Preferences > Advanced.
One thing that keeps me from using Sparrow for OS X (or any other desktop client) is that they download every email, and I don't want to spare the 7 GB of hard drive space for something I don't need every day. Mail for iOS lets me choose to store only the last X messages on the device, but I haven't seen that option on any desktop client.