Messenger should be able to compress with ZIP, attachment files which have a weight more than [user choice] Ko... It might be very appreciated by the users. Isn't it ?

That might be useful, but I'd be nervous about all mail readers (and users) being able to unzip attachments. Anyway, I'll put this out on the HELP WANTED list in case someone wants to code it up.

Reopen mail/news HELP WANTED bugs and reassign to nobody@mozilla.org

Put HELP WANTED in the Status Whiteboard so the mozilla.org bug query finds them

changing QA assigned to pmock@netscape.com

>That might be useful, but I'd be nervous about all mail readers (and >users) being able to unzip attachments. Every mailer can open a zipped file with external program (like PowerArchiver2001 - a freeware archiver with many format support). So I do not see any problems here. We also can just implement a call of an external program to zip the attachment. I believe we do not have to implement the full zip algorithm.

Change QA-assign to fenella

To Esther..

It seems like Mozilla have somekind of .zip support. Fx look at: http://lxr.mozilla.org/mozilla/source/modules/libjar/nsZipArchive.cpp Perhaps this could be used for zipping and unzipping attachments.

looks like work on this has begun in bug 180798 *** This bug has been marked as a duplicate of 180798 ***

I can't read. 'options', not 'opens'. clearing dup status, sorry. (sigh)

*** Bug 209273 has been marked as a duplicate of this bug. ***

Does anyone know where can be found information on the development, if any, of these features. Is this planned to be released in a future release? Any informations would be greatly appreciated. Pedro Madeira (Creator of bug 209273)

We'd need to be very careful about this potential 'feature' -- I know of several private ISP installations that are choosing to block/discard all .zip attachments, since zip-format is now commonly used as a container for viruses..... Best not to have Mozilla do magical things under the covers, unless it's really clear to a novice user what is being done, and why ....

How's the status on this? In reply to Comment #13 I suggest that Mozilla should by default NOT zip/unzip attachments but could be selected by power users or administrators for their users in such a way that only after testing this option would be enabled. Believe me: This would make mozilla score big against other mail clients due to the bandwidth gain achieved with a feature like this. Best regards from Portugal, Pedro Madeira

*** Bug 345237 has been marked as a duplicate of this bug. ***

Tweaking summary to improve findability. Some ideas from bug 345237 comment 0: > * Provide a button in the attachments pane (or elsewhere) that will compress > attachments when clicked. > * Provide a preferences configuration section that allows the user to > automatically have thunderbird compress attachments over xxx kb in size. > * Display a pop-up that requests the user to allow Thunderbird to compress all > attachments when the sum total size of the attachments is larger than xxx kb. > * Have Thunderbird automatically compress large attachments without > interaction when sending to users who use Thunderbird as well. > * Have a "Compress Attachments and Send" button > * Provide a "Compress Attachments" toggle when selecting attachments in the > file manager.

Filter on "Nobody_NScomTLD_20080620"

--> This bug should be resolved "wontfix", in full appreciation of the idea (wonfix+want_addon, see bug 577944 and bug 522873). This looks like a valid idea, and a good one indeed. However, it's very unlikely that core developers will find time for this, and it's a complex feature that cannot be the default behaviour. As such, it would be a nice candidate for an extension. N.B. There is an outdated addon for this feature: Auto Zip Attachments (https://addons.mozilla.org/thunderbird/4003) A modified version for TB 3.1 has been posted here (no guarantees, but worked for me): http://www.megaupload.com/?d=1WDSFIJB

Wontfix per comment 19...

In reply to comment #19: Your addons.mozilla.org "4003" link is outdated and gives me error 404 Not Found. The extension is now at https://addons.mozilla.org/en-US/thunderbird/addon/auto-zip-attachments/ and supports Thundderbird up to version 2.0.0.*; it does not support SeaMonkey.