Yosemite OS 10.10 Mail Memory Leak

Since upgrading to Yosemite I have ran out of memory (MacMini, 16 Gbytes) three or four times. I have traced this to Mail.app. The trigger seems to be when you drag multiple files into the email to have them included. Then, the memory usage starts racing, eventually using up all free memory within seconds. The only way to recover is to use Force Quit from the Activity Monitor, normal Quit from within Mail does not work. See the attached screenshot. By the time I grabbed the screen shot and pressed Force Quit, it was already up to 17 Gbytes of Memory.


Has anyone else came across this problem?


User uploaded file

iPad 2

Posted on Oct 19, 2014 5:17 PM

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326 replies

Nov 13, 2014 11:02 AM in response to mlwebber

I am having the exact same problem, with my imap godaddy email not updating. I was on the phone with apple for quite some time. It was a sync problem and he seemed to get it working by deleting all my trash. The trash sync was slow. But within an hour after we talked, it came back. Ugh...please let me know if you get this solved. I talked to godaddy also and they say it is a mail problem.

Nov 13, 2014 3:05 PM in response to Doren_Sean_Michael

The same thing happens with Gmail. Sometimes it will run along and sync okay, and other times it just won't. I can see email sitting there on the Gmail server for hours and hours without it coming into Mail. This started with Mavericks.


Ironically, it never is a problem with iOS mail. I wish the two teams would get together and talk.


Because of the syncing problem, I've stopped using mail for now. After all, the bottom line with an email client is actually getting the mail, right?


Also, since Yosemite, time machine does not work well with Mail. If I am enter time machine from within Mail, I just see a bunch of empty inboxes. And even if I don't request any restores or press any buttons, when I leave time machine my accounts information gets changed. For example, the order of the in boxes will change.


I spend hours talking with a "senior advisor" a couple of weeks ago and sending them a lot of data, but I never heard back after that.


What a mess. I'm using Mailplane for now.

Nov 14, 2014 1:51 PM in response to Doren_Sean_Michael

I am having this same issue with the memory leak since Yosemite upgrade. I am willing to provide any information to help, just let me know what you need and how I get it. This has been going on for weeks now without resolve. I have had 2 trips to Genius bar and not resolve. Please help me. For now, I am just opening my email when I need to send a message and then periodically opening it quickly before the memory pressure starts to build. This is becoming very annoying and is killing my productivity as I work from home. It seems to reset every time I close mail. Anyway, I am willing to help just let me know how to send in logs.

Nov 15, 2014 1:02 PM in response to gobigbue24

Hi gobigbue24, yes, that is a temporary fix. We discussed it several pages ago. It's obvious that you didn't read this Discussion because you could have had this temp fix days ago. We do appreciate you posting your findings very much so, thank you. We have not "marked" that as a solution because it's not really a solution, it's just a temp fix because, like me, it's vital that I be able to save my Drafts on the server and now I can't. Thanks!

Nov 17, 2014 4:09 PM in response to mswamp

I had the same problem, tried everything including clean install. But today working with an AppleCare rep we found the problem, hope this works for others. In mail, go to Window on the menu bar and then drop down to a Activity and open that up. You will see a window that displays your mail activity. We discovered that there was constant synching activity with a message in my draft folder and the mail server from that account. It was causing the memory usage to go through the roof as it kept attempting to sync and the activity kept multiplying. I deleted the draft and all is fixed. When you open mail you should see "activity" when your accounts, mailboxes and messages first sync with their designated servers. After that initial sync your activity window should display no activity unless of course you are composing, sending or receiving. If you see activity going on and you are not doing anything at the time, that's your culprit. So find the bad boy and get rid of him. At least it worked for me!

Nov 18, 2014 5:53 AM in response to gobigbue24

This seems to have worked for me, too. I have several email accounts that I use regularly, but the one that I seemed to have the most trouble with was one that's hosted at GoDaddy. It could just be that that is the account from which I most often compose longer messages containing attachments. But I haven't had the issue since disabling "save Drafts on server." There was also an OS X update in there somewhere, but I had already changed the drafts behavior.

Nov 18, 2014 6:13 AM in response to David Wolfe1

Anyone had this issue since updating to 10.10.1? The notes state "Resolves an issue that may prevent Mail from sending messages through certain email service providers", which isn't really our issue but that statement may be broad and I was just curious if anyone has updated & tested turning Drafts back on. I'll be updating soon myself and testing it but was just curious. Thanks!

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Yosemite OS 10.10 Mail Memory Leak

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