Raffy1
Level 1 (41 points)
Mac OS X

Q: High Mail CPU with El Capitan

Since upgrading to El Capitan, I noticed the Mail application using a lot of CPU. About 80-90% sometimes.

Then going down to a few percent and then without any reason going up again.

Did a few times a "Rebuilt Mailboxes", but that did not help.

 

Any suggestions to repair this?

iMac, OS X El Capitan (10.11), 3.06 Ghz, 8 GB

Posted on Oct 10, 2015 10:33 PM

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Raffy1

Q: High Mail CPU with El Capitan

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  • by blackzero2000,

    blackzero2000 blackzero2000 Oct 7, 2016 3:49 AM in response to Raffy1
    Level 1 (4 points)
    Oct 7, 2016 3:49 AM in response to Raffy1

    You maybe have saved an E-Mail as Template. Then Apple Mail comes into a loop (Software Bug since Apple Mail 8) with CPU as high as 180%.

     

    Solution:

    Go to:

    ~/Library/Containers/com.apple.mail/Data/Library/Application Support/Mail/Stationery/Apple/Contents/Resources/Custom/Contents/Resources

     

    clean all E-Mails inside this folder. (you can move them to your desktop if you want)

    restart Mail.

     

    As long as Apple does not fix this Bug, you shouldn't use E-Mail Template functionality at all.

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