Comment 4 for bug 727321

For mobile laptop users, both kinds of behaviour are good -- at different times. Like when on broadband, it's great to get attachments downloaded so one is able to work with them when offline. OTOH, when using GPRS, every saved byte counts, so it makes sense to download just headers and everything else on demand.

Maybe it would make sense to:
- develop some heuristics to decide, if postler should download just headers, header and body or full message
- download headers first so user can see his/her emails as soon as possible and then download bodies/attachments in background.