
A ‘Downloading messages…’ progress bar should appear in the bottom-left of the Mail application.Select ‘Mailbox’ from the toolbar, followed by ‘Rebuild.’.

In the left-hand menu, select your Inbox.If you’re at a venue that charges based on how much data you consume, or you’re sharing your mobile data with your Mac via a hotspot, then commencing a rebuild could potentially incur you additional charges – in these scenarios, you may want to wait until you’re back home, and have access to your unlimited home Wi-Fi before starting a rebuild! You should also bear in mind that redownloading a large number of messages can take a significant amount of bandwidth, so you should only rebuild when you have access to a stable, reliable Internet connection that isn’t capped. For example, you could empty your Spam, Trash and Junk folders, and may even want to consider emptying your Draft and Sent folders, too. If you have a large number of messages in your Mail account, or regularly exchange particularly large attachments, then a rebuild may take a few hours or, in more extreme cases days.īefore you start a rebuild, it’s a good idea to take stock of just how many messages Mail is going to have to download, and consider whether you should take steps to reduce this number. Rebuilding your inbox requires Mail to delete and then redownload every message from your mail server. “Rebuilding your mailbox” may sound complicated, but it’s a fairly straightforward process, where the only potential complication is how time-consuming and data-intensive some rebuilds can be.


In this article, I’m going to share a technique that can resolve a huge range of bugs, errors and general strange behaviour you may encounter with the Apple Mail app – including the email attachment display error that so many Sierra users have been complaining about. If you’re experiencing any of the above issues, then don’t panic: this is just a display bug, so all of your attachments are still in your inbox, you just can’t see them! In fact, if you log into your email account via iCloud Mail then you’ll be able to view and access all of your email attachments, as normal. You cannot open any documents that are attached to encrypted emails.Email attachments initially appear to be working correctly, but they disappear as soon as you reply to the email, or attempt to move the email to a new folder.All email attachments received before you updated to Sierra are working as expected, but you’re not receiving any new email attachments.All email attachments you received before installing Sierra have vanished from your inbox and/or ‘Sent’ folder.The paperclip icon appears next to emails as normal, but the attachment disappears as soon as you open the email.MacOS Sierra users have been reporting a wide range of strange behaviour with Mail accounts that are configured for IMAP access, but some of the most common issues include: So unless you’re super-consistent about adding folks you email to your contacts list, you probably don’t want to use this except as a last-ditch, autocomplete-is-not-working-at-all troubleshooting tool.After updating to macOS Sierra, some users are discovering that email attachments are no longer working correctly in their Apple Mail app. If you use that, though, be certain that whatever problem you’re having with recent addresses is really huge, as this will wipe them all out. Now, what if you want to remove all of your recent addresses, which will get rid of everyone who’s not in your contacts or your company directory? Microsoft has a tool for that at this link (near the bottom). Finally, just click the circled “x” next to each one you wish to remove and it will take that person out of your list!.In the “To” field, start typing the first few letters of the address (or the person’s name) you’d like to remove, as shown in the earlier screenshot.

