Mac slow downloading email files

In the Mail app on your Mac, choose File Import Mailboxes. Select a source in the list, read the information that appears below the list, then click Continue. If you’re importing a mailbox exported from Mail or a folder in the ~/Library/Mail/V8 folder on another Mac, select Apple Mail. To get to the Mail folder on a Mac, click the desktop.  · If your Apple Mail doesn't seem to be searchable and/or has become so slow it seems to hang your Mac -- or even displays incorrect email content, then .  · Mac Mail Constantly "Downloading Messages". Running macOS High Sierra (). An odd issue has arisen wherein my Mac Mail is constantly displays a "Downloading Messages" message when no new emails are being downloaded. It often displays that several messages are being downloaded. Appears to be some sort of sync issue but it is using a.

If you use the Mail app on your Mac and notice that it seems to have slowed down, you can try rebuilding the message index databases to see if that will help. The more email addresses and the more mail you save, the more likely this is to assist with a slow system. It might take a while to complete, but your email will still work perfectly so. By default, the Mail app on your Mac downloads all email attachments you receive to the computer, eventually taking some serious amounts of storage space. As we've seen in the past, there is a way to tweak this and stop the Mail app from downloading all attachments, but it will still locally download attachments that you open. Select the Envelope Index file and copy it into a new folder you create on your Mac. Move the newly created folder to the trash. On the menu bar click on Go and then select Applications. Click the Mail option and Continue on your pop-up menu. A new Envelope Index is created to replace the deleted ones.

Launch Mail, select one of your mailboxes and click on the Mailbox menu. At the bottom of the pane choose the Rebuild option. If you have a large mailbox, you can expect the process to take a few. The first thing you should do is check to make sure the reason your computer is acting slow is because of Mac Mail. Sometimes there are other problems, anything from hardware issues to software memory leaks eating up system resources. Hit Command-Space and type in Activity Monitor in the launch window. Mac Mail Constantly "Downloading Messages". Running macOS High Sierra (). An odd issue has arisen wherein my Mac Mail is constantly displays a "Downloading Messages" message when no new emails are being downloaded. It often displays that several messages are being downloaded. Appears to be some sort of sync issue but it is using a lot of memory and causing the computer to run slower.