You can prevent large messages from downloading to your Inbox from your e-mail server .
If you are using Exchange Server
Note If you want to receive some large messages but not others, select check boxes under Exceptions to specify which messages you want to download. For example, you can specify that messages from a certain person, such as your manager, are to be downloaded to your Inbox regardless of size.
If you are using POP3 accounts
If you are using IMAP and HTTP accounts such as Hotmail
Note You cannot specify a per-folder download size restriction; however, you can choose to download only message headers, so that you can choose which messages to download from the server.