The mail is incredibly slow since the update to El Capitan

Hey,.

I use Mac OS X El Capitan v. 10.11.1 on a MacBook Pro, 2.8 GHz i7 with 16 GB of RAM. I'm 50 Mbit DSL online.

I never had any problems with sending or receiving mail. But since I upgraded to El Capitan Mac Mail has gotten incredibly slow and almost unusable. It will take up to 10 minutes to load a simple text message or attachment of the small (less than 1 MB) image. I don't have these problems when downloading something from a Web site. Download a 3 MB file takes 1-2 seconds.

Also sending emails is incredibly slow. It takes several minutes, also just for the mails in plain text.

And then Mac Mail seems often to synchronize, even if there is no new messages. It displays "loading 10 of 32 messages" which is stuck and loads forever. And nothing will happen until I restart Mac Mail several times.

I am managing 5 accounts IMAP with Mac Mail, which is more than usual but not an absurd number. In addition, I never had problems before. They are partly accounts Google App and partially Zoho.com.

Apple: What can I do to recover usable e-mail software? I don't want to go, but I have to examine it if it takes 10 minutes for an attachment to load.

Thank you

That has solved it for me (found here on the forum):

  • Make a backup
  • Close mail
  • Copy the ~/Library/Containers/com.apple.mail folder to a different location (in case something goes wrong)
  • Delete the ~/Library/Containers/com.apple.mail folder
  • Restart the messaging

You will need to reconfigure parts of the mail, but it is now much faster. Let's see if that is still true.

Tags: Mac OS & System Software

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