179727 - Provide "do not download attachments over IMAP" UI option

Status: RESOLVED DUPLICATE of bug 55657

(MailNews Core :: Networking: IMAP, enhancement)

Description

[Kai Engert [:KaiE:]]

Some users access IMAP servers over modem connection, typical scenario: checking
corporate email from home or from a hotel room.

As of today, the mail client will completely download all portions that are
displayable inline.

There should be a preference that switches the behaviour to a "attachments on
demand only" mode.

Comment 1

[David :Bienvenu]

Jean-Francois, don't you have a bug about this? Or is that bug just for images?
Kai, are you suggesting we don't download *any* attachments? Where do you draw
the line? What if a user sends you a 1K text attachment? Or forwards a 1k
message as an attachment? Currently, we only start invoking Mime parts on demand
if the message is larger than 25K, I think (though it is a hidden pref), because
getting the mime structure of a message is not free, and it's not worthwhile for
small messages.

Comment 2

[Jean-Francois Ducarroz]

It's a dup of a bug about not showing attachment inline (that was an option in
4.x), let me find the bug number...

We will have to modify mime and imap.

Comment 3

[Jean-Francois Ducarroz]

this is dup of bug 55657 which is targeted for 1.3b

*** This bug has been marked as a duplicate of 55657 ***