Q: High Mail CPU with El Capitan
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Jan 16, 2016 11:14 AMby dale207,Chroot, this seemed to cure the problem I'm having with Apple mail and the IMAP cloud account, I've narrowed it down to that. I deleted the log per your instructions and restarted mail, the CPU for mail was way far down the list insignificant, the drain on the battery was almost zero, no impact. So I thought this is to good to last and restarted Mail, still fixed. So I went back in to see if that log file was there and it was. When I came back to mail it was back to it's old self again until I took the cloud off line, then put it back on line and all was good again. It is all about mail and cloud, anyway thanks for the very useful tip and I hope mail is fixed for sure. Battery life with the macbook pro and 10.11.2 looks to be at least 8 hours maybe more, but I have not timed it.
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Jan 17, 2016 7:16 AMby Vaz,SOLVED
cumhuryalcin's solution has SOLVED this for me, Ive been running mail for 30min and so far looks good CPU from 250% now just 0.x%
My mail CPU problems started when migrating to ElCapitan. this folder
~/Library/Containers/comapplemail/Data/Library/Logs/Mail.
jumped from 50MB to 6GB!! I deleted it, and looks good now.
Previously to the above, I also tried the below link solutions with NO results
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Jan 17, 2016 9:12 AMby ewi007,MY EXPERIENCES WITH THE EMAIL CPU PROBLEM AND HOW I FIXED IT
Called Apple, called my email provider - finally solved by another email client - read on if you're interested about my full blown experience
@VAZ and all others still having Mail problems under El Capitan.
My situation & the problems I had
- I upgraded to El Capitan only last December, and started struggling with Mail since then
- 5 IMAP accounts, few of them with probably thousands of mailboxes (I call it folders to structure email)
- one of the accounts is a HOVER email account with 87K mails, 7Gb size
- stopped syncing after about 40K messages; deleting 2 emails took minutes...; CPU at +150-200% all the time
- had exactly the same problem on my iMac and my MacBook
- NO Avast or any other third party stuff installed
- after 2 WEEKS (of syncing), I decided to call Apple
What I did before reaching my (final) solution
- called Apple. They gave me free support within 30 days after installing El Capitan. They were very willing to help. I turned out that my Exchange accounts (although I've configured them as IMAP) are OK. The problem was the HOVER account.
- called Hover. Didn't notice any problem on their side. What was very odd was that they told that because I was at 79% of quota usage (quota of 10Gb) likely caused the problem. Sounded a bit odd to me, but I started cleaning (mainly deleting attachments), and came down to 59% of quota. Problem still there. Deleting 2 messages did take minutes (Apple Mail says ‘Moving 1 of 2 messages’). Although the Hover support people were very friendly, they were not capable identifying the problem. (maybe because of the length of this post … it seems to be a tough one). So asked for a Hover test email account, to try exporting and importing…)
- I finally decided not to do this. I already has lost many days and nights with this bloody Apple Mail problem. I decided to try another email client … why not. After internet research, I decided to try out Mailmate (I’ve no vested interest in Mailmate!!). Airmail and Postbox were contenders, but read too many negative comments on stability and functionality.
My experience with Mailmate, and did it solve my problem?
- Started extremely fast
- Stopped syncing at 45000 messages. Sent a mail to their support guy –he even responded over the weekend- and got it fixed
- So YES it solved my problems. Should have done this sooner!
What I like and don’t like about Mailmate
LIKE
- Solved my problem
- Speed
- Intelligent – moving messages to folders is SMART!! If you send mail with an attachment and forget the attachment, he notifies you (he knows that you’re referring to an attachment…)
- Extremely helpful in getting your open mails to ZERO. The ‘correspondence’ feature is unique!
DON’T LIKE
- Doesn’t show me the photos of my contacts if they send mail. That was a way for me to visually get better view on messages.
- Editing – no wysiwyg – although you can format, it’s not as obvious as Apple mail
- NOT FREE – it costs 50 USD, but that outweighs the time I lost with my Apple mail problem!!
- Are ‘they’ here to stay? Is a disadvantage, but at the end of the day, it’s an email client. My mail is still safely in the cloud with my email provider(s).
So to anybody who experiences email issues under El Capitan, just give it a 30-day free trial!
(again, I’ve no vested interest pushing Mailmate but I’m just satisfied it solved my issue … and it’s amazing that Mailmate only uses 10-20% max of your CPU …
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Jan 17, 2016 9:14 AMby figante,Hi Vaz: Is this an IMAP account? Do you have many folders and/or messages in it? I had the same problem, and the only way to bring the CPU down was to drastically reduce the number of folders (and consequently the number of messages). Other mail clients seem to be able to deal with the large number of folders/messages, but Mail in El Capitan cannot.
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Jan 17, 2016 9:38 AMby Vaz,Actually I didn't have a lot of files or folder, like 100 messages in inbox and maybe 500 messages for the whole mail app, I even culled my mail boxes to half that and the problem came back.
I just bought this iMac top spect 2 days ago, they installed Avast security without me wanting it, there were many reports here to say that its Avast virus scanner is the problem
