1226486 - IMAP account wrongly shows attachment-paperclip-icon for text-only-multipart messages

Status: NEW

(SeaMonkey :: MailNews: Message Display, defect)

Description

[Rainer Bielefeld]

Steps how to reproduce with  SeaMonkey German 2.39 final Mozilla/5.0 (Windows NT 6.1; WOW64; rv:42.0 from official download area)  Gecko/20100101  Firefox/42.0  Build 20151103191810  (Classic Theme) on German WIN7 64bit:

1. With SM e-mail-client IMAP account receive an e-mail like 
   Attachment 8688918 [details] for Bug 1224578
   Bug: in Threads Pane "Attachments" Column shows a paperclip what
        indicates an attachment, but the multipart message only contains
        a text block

Additional info:
a) Such e-mails often are created by "Machines", so I see such
   e-mails sent by SBC- and Phoenix PLC ass error alarms.
b) an other source for such e-mails might be software creating mass
   e-mails for invoice sending or similar as we see in  Bug 1224578
c) E-mails showing paperclip in SM do not show the attachment indicator 
   in TB 45.0a1 (2015-11-18). I can't remember whether there might 
   have been the paperclips in earlier TB versions
d) currently I do not know a source for such e-mails to make this one
   reproducible easily, but I can send such e-mails if required for 
   research.
e) this one might be about the same problem as "Bug 302864 - 
   multipart/mixed messages have attachment icon, but parts are 'inline'"
   But discussion there was a little controversial and the involved 
   messages not exactly the same as the ones for what I observe the 
   problem.

@[e-mail]
This effect is misleading you that you think your received e-mails might have lost attachments.

Comment 1

[Rainer Bielefeld]

f) Paperclip symbol  vanishes in the moment when you click the message in the
  Threads Pane the first time
g) due to my test result Version -> 2.0

A possibility to show the effect is:
10. Open SM version not affected by Bug 684924 (I tested 2.0.0)
    you can download old portable SM versions from
    <http://sourceforge.net/projects/portableapps/files/SeaMonkey%20Portable/>,
    but test also should work with Version from 
    <http://www.seamonkey-project.org/releases/>
11. If necessary ake visible "Attachment" column in Threads Pane
12. Open HDD folder containing downloaded Attachment 8688879 [details]  for Bug 1224578
13. Drag and drop .eml to trash folder of an existing IMAP account
    » Paperclip icon showed until first click on e-mail in Threads Pane

Comment 2

[Rainer Bielefeld]

h) Also REPRODUCIBLE with  English SeaMonkey 2.41a1  (X11; Linux x86_64; rv:44.0)
   Gecko/20100101 Firefox/44.0 Build 20151103003001  (Classic Theme) 
   on VirtualBox Ubuntu 14
   For My tests I added an IMAP account existing on my email service provider's
   sever to SM. After e-mails have been downloaded to SM account they all 
   showed the paperclip-icon for those typical machine created e-mails
   So Os -> All

Comment 3

[Rainer Bielefeld]

(Commenting on User Story)
I also can reproduce that phenomenon with subscribing mailing list "[e-mail]" for a POP3-account (plain text by default, view as plain text or original html does not matter) at <http://lists.freifunk.net/mailman/listinfo/braunschweig-freifunk.net>
Some of the postings show the paperclip because the postings contains a signature, but others (like "Re: [freifunk-bs] mehr ESSIDs" by Matthias Kramer 24.11.2015 09:46 +0100)

Comment 4

[Rainer Bielefeld]

I still see this with   English SeaMonkey 2.45a1  (Windows NT 6.1; WOW64; rv:48.0)  Gecko/20100101 Firefox/48.0 Build 20160308001946  (Default Classic Theme)  on German WIN7 64bit

NEW due to <https://blog.seamonkey-project.org/2015/11/25/my-unconfirmed-bug-reports/>