Mail: Organize By Conversation - wrong emails

So disappointed in Apple. Over 32,000 views to this thread and nothing. I've updated to 10.10.3, deleted my "envelope" files, rebuilt my inbox, check and unchecked all the suggested boxes and my email is still a mess. Guess it's time to say goodbye to Mac Mail.

So, FYI, the original bug ID referenced by Apple was 18454172, and it has now been closed (since the last 10.10.3 update actually).

That's interesting if it's still not working, and worth re-doing a report now. I didn't rebuild my inbox yet so I don't know if it worked for me

Have upgraded and rebuilt on both my laptop and desktop. Might have fixed some but definitely not completely fixed at all.

Same problem here. Just a reminder, probably been here already: You can break the conversation chains by unticking "organize by conversation" in view-menu. Makes it easier to find the individual messages that now are linked to conversation by blue color but are not otherwise stacked together.

Switching to Outlook Mail or any other email client.... bye bye Mac mail....

This just started happening to me the other day. At first it was a small, non-issue. But today I had a conversation with 700 emails in it!

I tried the technique detailed here:

https://nisalm21.wordpress.com/2015/01/02/apple-mail-app-you-alright-mate/

And it worked!

Given what I read in this thread, it probably won't fix everyone's problem. But it worked for me.

I firstly backup all the Mailbox by "Export Mailbox ..." and deleted all the mailboxes and accounts, then add my accounts and import all mailboxes.

It seems the problem was solved by doing this.

I have the same issue ... I tried everything written here but no help ... hope somebody can tell how to fix this ..

this didn't work for me - I still have emails with completely different subjects, from completely different clients, being randomly joined into one 'conversation' - and I can find no way of manual extracting one incorrect mail from a conversation.

It's years since the beginning of this thread yet no resolution, thanks apple. Yet another display of how much they care about their customers or quality control for that matter.

This is NOT a little bug, this makes mac mail completely UNUSABLE for anyone using it for work or anything else where efficiency is required. It looks like mail is yet another doomed apple software.

I had this problem and it drove me crazy. But one of the Yosemite updates seemed to have fixed that. I have not noticed conversations being grouped with the wrong correspondents in more than a couple of months now. Perhaps some miss-grouping is still taking place, but if so I have not noticed it, whereas it was a constant problem a while ago. Perhaps if you rebuilt your mailbox(s) that might help. Another option assuming that you're using IMAP connections is to remove the accounts and add them again to the Mail app (I ran the rebuilt option a couple of times before, but did not try removing and re-adding the IMAP accounts). I had seriously considered replacing the Mail app with another like app, but I'm now glad I held off since I'm no longer experiencing any problems with getting wrong emails when organizing by conversation.

I have the same problem too. As others noted, unchecking the related messages option fixes the problem but it's annoying because seeing truly related messages together is a nice option. This needs to be fixed.

The problem seems to be related to "Subject" field. I found that I have unrelated messages grouped into a conversation, even though the To, or CC fields have completely different people on them. However, the Subject line was the same. In this case it was a simple Hello. somehow the bone heads at Cupertino mother ship thing that every message that says Hello in the subject line should be grouped together...

Dear Zaratzi, I believe this is NOT the problem so many before have experienced here. The issue is that COMPLETELY unrelated emails are bundled together, they also don’t have the same subject.

I cannot believe that this problem has not been fixed by Apple over the course of almost a year (I first experienced this even since 1 1/2 years ago). Is there really no other way than changing email client?! How shameful is that!

I have found this in another forum - unfortunately in German: http://www.mactechnews.de/forum/discussion/Mail-vermischt-meine-Mails-Was-kann-i ch-machen--286435.html It basically says that newly indicating the emails helps.

However, this refers to older versions of Mail and OS. I tried, but could not find a folder "Library/Mail" at all. Also, the command line in Terminal produced an error message.

If I enter "newly indicate mails" in Apple Mail help, it ironically shows me an information that indicating mails can be necessary sometimes, but there is no information at all how to do this.

Any ideas how to adapt this (promising) hint to the current Mail and OS? Thanks!

I am also having this problem. I am mailing a Dr with private information and at the end of one of her replies to me I found threaded mails from my dog walker! On my iphone the two mail names were grouped together, ie Joan and David, even though they don't go together. The only link is that both were mailing my mac address - their names, details, thread titles, content were all totally different.

This could be a serious issue - please can you let me know what is going on?

I now feel worried about putting anything in ANY mail!

I wanted to post the following solution that seemed to have helped my issue with this grouping problem!

Instead of linking my Gmail account with Airmail using the Gmail setup, I used the IMAP setup instead. I still have "Use Conversations" preference enabled. For whatever reason, this seemed to fix the issue of non-related emails being grouped together simply because the Subject was the same (even though I had the "Group by Subject" preference unchecked.

Not sure if this will be helpful for anyone but thought I'd post how I was able to fix it!