limiting IMAP email, dropbox and iphone backup ETC sizes?
i have a 250 GB hard drive and store NO data on it. while i do put a lot of software on it i feel like some items just plain take up way too much space. does anyone know if there is a way to limit some things such as:
1. Mac Mail or Thunderbird database sizes (by perhaps using a setting that says not to download email??)
2. iphone backup sizes (these are oftentimes huge and i have to go find them to delete them.
3. dropbox or google drive (like if i buy 100 GB of space on dropbox and i USE 35 GB of this space should this take up space on my Hard Drive on my computer??)
background: right now i am sure i have a 25GB iPhone backup, 25 GB mac Mail database, 30 GB Thunderbird database and 30 GB taken up by my Dropbox folder which doesn't leave a whole lot of room for apps or data.
note:
i am also posting this in yosemite forum and apologize for also posting here but this is an issue that has been killing me for about four years and as i get ready to upgrade the laptop after upgrading the desktop i really need to figure it out!!
MacBook Pro, OS X Yosemite (10.10.1), mid 2009 13" 2.53 core2duo 8 GB RAM