That means Exchange Server 2010 has pretty much eliminated the problem since most users will probably hit their mailbox storage size limit well before reaching 100,000 items in one folder.Īgain, you have to contact your IT department to find out your Exchange version. Apparently Exchange Server 2007 has a single-folder count limit of around 20,000 items and Exchange Server 2010 has a limit of around 100,000 items. Links at the bottom of the article I referenced above lead to other articles that state their limits. That’s not a lot of mail and so that number will be easy to reach if your company is using those older versions of Exchange and you are filing a lot of mail in one folder. It’s a bit ironic that a filing best-practice that will make you more productive could lead to a technical server issue.Īnd even if you are not using the Processed Mail folder approach, but perhaps you are storing lots of old mail in your Inbox, then you could still be impacted by this issue the Inbox is subject to the same limits.Īre you likely to hit this? How many items are too many for a single folder? Microsoft has an article on this and it states the limit is directly determined by the version of your Exchange Server.Īccording to that article, if you have Exchange Server 2003 or 2000, the limit will be somewhere around 2,500 to 5,000 items in one folder. Nearly all my books and classes discuss the huge benefits of doing this, so I won’t repeat the reasons here (for more online information about how I use the Processed Mail folder, see this article).īut obviously that single-folder filing approach could make you more prone to reaching the Exchange single-folder item count limit (again, if using an old Exchange server) any one folder loaded with lots of items, like the Processed Mail folder, can cause the problem.
#Why is my outlook 365 so slow how to
Many IT departments are slow to upgrade their server software, so check with your IT department to confirm the version (more on which versions are effected below).īefore I explain more details on how this limit works, how to identify it, and specific strategies to fix it, let me first give you some background on why 1MTD or MYN users should be particularly aware of this.Īs you may know, my primary recommendation in 1MTD and MYN for filing mail is to file all saved Outlook e-mail into one folder called the Processed Mail folder. But also note that even though you may have a newer version of Outlook, the Exchange Server version your company runs behind your Outlook is invisible to you, and it could be quite old and so still subject to this issue. Note this is a problem only on older Exchange servers-Microsoft has mostly fixed this on the newest ones.
#Why is my outlook 365 so slow archive
The fix is simple: spread your mail across more folders or subfolders or archive or delete your mail off the server.
That’s because it’s based only on item count, not size, and that count is not that hard to reach well before you run out of mailbox storage space.
You might still have lots of space, but if you have too many e-mail items in one folder, the slow-down will occur. The good news is, if you have exceeded that limit, it can be fixed fairly easily as I discuss below, and your speed should come back.Įxchange’s single-folder item count limit is different from Exchange’s mailbox storage limit. If so, you may have a problem that most people are not aware of: you may have reached Exchange’s single-folder item count limit. Has your Exchange-based Outlook mail client performance gotten slower over time? For example, is Outlook Search getting slower? Or do you often get a message saying something like “Requesting data from Microsoft Exchange Server” that is slow to clear before you see your mail update?
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