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bigw@ Author

Level 1

17 points

Sierra Mail Slow

Hi guys,

My current machine:

MacBook Pro (Retina, Mid 2012)

Processor: 2,7 GHz Intel Core i7

Memory: 16 GB 1600 MHz DDR3

Graphics: NVIDIA GeForce GT 650M 1024 MB; Intel HD Graphics 4000 1536 MB

My issue:

I updated to Sierra yesterday and everything is working fantastic except for one thing: My Mail is slow, to be more specific it takes about 2 seconds to show the content of the mail on the far right when I click on a new email. This is for all emails I receive, not only emails with attachments. Everything else relating to speed for Mail is perfect - this is only isolated to the loading of email content.

I would appreciate any feedback to try and resolve this.

Thanks in advance.

MacBook Pro (Retina, Mid 2012), macOS Sierra (10.12)

Posted on Sep 22, 2016 12:31 AM

53 replies

Nov 8, 2016 11:04 AM in response to pawciu

Thanks - combining this with a rebuild and then restarting Mail fixed the slowness.n

Nov 15, 2016 9:43 AM in response to pawciu

Thank you very much pawciu.

Has sorted mine out too.

Nov 16, 2016 4:56 AM in response to pawciu

pawciu is a genius!

Tgr74

Level 1

8 points

Nov 17, 2016 4:08 PM in response to bigw@

Not sure if this will help, and maybe I should have realized it before, but when I click and hold on the Mail icon in my dock, it showed like 10 versions of the viewer window. I then hit "show all windows" and noticed small thumbnails of the viewer windows at the bottom of my screen. I clicked on each then hit Command + W to close them out one at a time. This seems to have sped my mail up considerably. I also did all of the things recommended here. Turned off the "highlight messages with color...", rebuilt the inbox etc... So maybe it all helped!

Nov 18, 2016 4:32 AM in response to bigw@

Fact is since 4 Weeks Apple does nothing about it!

In Mac OS El Capitan Mail worked flawlessly!

Windows will eat Apple soon!

milsky

Level 1

4 points

Nov 18, 2016 4:42 AM in response to simonfromoberkirch

Sorry but truth is I think they are working on this, I received a call from Mac support (unsolicited) following up on this error. Contrary to popular belief they have a team that monitors these forums for issues and future bugfixes so are aware of the work around and have informed me that they are developing the fix, I agree that this should have happened sooner and am sure that there are many customers who dont know about this workaround but I guess this is what happens !

KTouw

Level 1

6 points

Nov 18, 2016 8:27 AM in response to milsky

I also received a call from Apple Support to get information about how pawclu's solution was affecting Mail on my computer. Personally, I don't miss having mail threads highlighted. I think Apple engineers are aware of the problem and at least gathering data on why some computers/users are being affected.

bjmelis

Level 1

4 points

Nov 19, 2016 4:23 AM in response to pawciu

Thanks a lot. Have been desperately looking to find a solution for my sluggish Mail app after the update to Sierra. After many unsuccessful attempts, your suggestion fixed the problem right away!

Sierra Mail Slow