Huge memory leak in Mail

Discussion in 'OS X Mavericks (10.9)' started by mdgm, Oct 29, 2013.

  1. mdgm macrumors 6502a

    Nov 2, 2010
    There is a huge memory leak in the Mail app. Whenever I open it it uses up several GBs (over 10GB, I think) of my 16GB RAM is slow and doesn't work properly. Anyone else with this issue.
  2. hallux macrumors 68030


    Apr 25, 2012
    Mine is using 65 MB of memory. How much mail do you have stored/synced in your mailboxes?
  3. mdgm thread starter macrumors 6502a

    Nov 2, 2010
    10s of thousands of messages.

    I hope Apple fixes this bug in 10.9.1. I would like to be able to use the Mail app again.
  4. chabig macrumors 601

    Sep 6, 2002
  5. AcesHigh87 macrumors 6502a


    Jan 11, 2009
    New Brunswick, Canada
    Same for me.

    From what I've heard they changed the way Mail works and it now downloads all emails for offline viewing which would mean, for guys like us who don't delete things, Mail is slow or (in my case) unresponsive.

    I wonder if I let it sit for a few hours and finally get started (hopefully) and then clean out my messages if it'll help.

    Personally I prefer marking things as read but keeping them in case I need them later. This doesn't seem like it will work anymore though.
  6. flopticalcube macrumors G4


    Sep 7, 2006
    In the velcro closure of America's Hat
    Check your Accounts.plist file. There appears to be a bug that creates multiple entries for some accounts. My plist file was 40mb and had thousands of copies of my hotmail account. Once edited down to size, it was 25k and Mail now behaves with only 65mb taken.
  7. whiletrue macrumors newbie

    Nov 3, 2013
    same as me.
    mine is MBA 2013 w/ 8GB but I noticed mail app occupies 5GB in memory and consumes 9% of CPU power at that time. I forced quit the app, but I should've noticed it ASAP since the battery was wasted in vain.
    Also it doesn't sync with live mail recently, weird. hopeless...
  8. Smokebelch2010 macrumors newbie

    Nov 8, 2013
    Nice one. My accounts plist was 80mb and contained 33000 entries for a hotmail account that I haven't used for several years!

    I haven't used Mail on my Mac since I updated to mavericks because the only way to get it running plus use my other programs was to keep running Memory Clean until mail eventually started, get the info I needed then shut Mail down again.

    I wasn't sure how to easily delete all that data in the plist so I created a new plist and just copy/pasted the info that I knew had nothing to do with the hotmail accounts. It seems to have worked and mail opens in a few seconds
  9. madmacfan macrumors 6502

    Feb 19, 2012
    London, United Kingdom
    Theres a Mail update available in the mac app store, which I believe is supposed to include some bug fixes. Might be worth downloading to see if it puts an end to the memory leak.
  10. Smokebelch2010 macrumors newbie

    Nov 8, 2013
    No that didn't fix it. It was after updating and still having the problem that I tried the plist trick

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