9 Replies Latest reply: Mar 22, 2014 9:00 AM by UKenGB
MichiHenning Level 4 (1,350 points)

Since my iOS 5 update, viewing mail messages by thread no longer works for me (both on an iPhone 4s and an iPad 2). This happens with an imap account. (I don't know whether POP accounts are affected.)


It's easy to test this:


  1. Send yourself a mail message with subject "Test".
  2. Reply to the message, so there are now two messages with subject "Test" and "Re: Test".
  3. Check that the "Organize By Thread" option for mail is enabled on the iOS 5 device.
  4. Look at your inbox.


On my iPhone and iPad, I see the two messages displayed as separate items but, with Mac Mail on OS X, they are shown as a single entry.


Is anyone else seeing this or am I the only one? Any known work-around?





  • JohnTheAppleFan Level 3 (700 points)

    It works fine on my iPad2 wih IOS5.   Organize by thread is On.

    Test & Re: Test are stacked in the left hand Inbox column.  Once I select them, they are listed as separate emails.

  • MichiHenning Level 4 (1,350 points)

    Is this with an imap account or a POP account?

  • ecc.sd Level 1 (0 points)

    I, too, am having "organize by thread" trouble with an imap account, both on my iPhone and iPad 2. In fact, 32 mails between 6 family members and myself going back 3+ months jut got lumped together under 1 (one!) thread, even though there really are at least 4-5 different threads, and with different subjects at that. I mean, really! Imagine the fright I just had upon seeing that my elderly parents and I have (supposedly) exchanged 32 mails all within the past half hour, at almost midnight!


    The only common... thread I can see among all 32 mails is that they (sometimes) were sent to the same group of addresses, but which should be no reason for entirely different subjects to be grouped together under one thread. Guess it's time for a bug report...

  • MichiHenning Level 4 (1,350 points)

    The problem for me isn't that messages that belong to different threads are shown together, it's the opposite: messages that should be in the same thread are shown as separate threads.


    I submitted a bug report to Apple, and they've since acknowledged that it is a known problem and said that they are working on it.

  • ecc.sd Level 1 (0 points)

    Actually I also see the opposite as you say, i.e. messages that should be in the same thread are shown as separate threads, even though they are properly grouped in Mac Mail on OS X.


    Thank you for having submitted a bug report to Apple, and for letting me know that Apple has since acknowledged it as a known problem and is working on it.


    Good to know that I'm not alone here - obviously others are also faced with the same issue, though one would not have known based on the short... thread here!


    (Eeeeek, I take it back! I just saw in Mac Mail on OS X that some messages aren't properly grouped, either. Sigh...)


    Message was edited by: ecc.sd

  • theBigD23 Level 1 (20 points)

    I'm having the same issue. Emails that should be grouped into one thread are not. They are grouped on Mac OSX. Best thing to do is let www.apple.com/feedback that you're having this issue.

  • fredash Level 1 (10 points)

    12 months later your posts... i'm under IOS6... and i have the same issue...

  • kcollins8687 Level 1 (0 points)

    Sep 19 2013 .... same issue with IOS 7


    When this feature is turned on I cannot open the email thread at ALL (exchange server). When turned off, it works fine.

  • UKenGB Level 2 (270 points)

    Another year and now on iOS 7.1. Threads that are correctly grouped on the Mac (Mavericks) are displayed separately in iOS Mail.app.


    Although often misunderstood as to how this feature should work, there's simply no excuse for such inconsistency. Works in OSX and abject failure in iOS. Still, 2 years later.