Why is imap in outlook so slow

The operation did complete for a few emails in the first screen. The same thing happened when I tried to empty the Deleted folder which had thousands of emails. I ended up deleting one screen at a time, which is extremely time consuming.

The Deleted folder wasn't even able to load and show all the emails in it. Although I selected "Download emails as they arrive", new emails often take a long time before being synced to my computer.

When I try to manually sync the account, it often reports "xxx isn't available". Many people appear to be experiencing the same issue and there are multiple questions asked on this site e. Please note that my Internet connection is very fast Speedtest.

And for point 2 , as a comparison, Gmail and Yahoo IMAP performs much better so it's not some mysterious software problem with my environment.

I understand that you are facing some issues while accessing Outlook. In regards to the first issue you are facing, as Outlook. It may take some time to load all the messages from the server and to show up in your web browser. I appreciate for all the troubleshooting steps that you have taken to resolve the issue and I am sorry for the inconvenience you have faced for the same.

I suggest you to optimize your browser by following the steps provided in the article below and see if it helps:. Note: The Reset Internet Explorer Settings feature might reset security settings or privacy settings that you added to the list of Trusted Sites. The Reset Internet Explorer Settings feature might also reset parental control settings.

We recommend that you note these sites before you use the Reset Internet Explorer. Settings feature. Resetting Internet Explorer isn't reversible, and all previous settings are lost after reset. As far as second issue is concerned please try running the Modern UI App troubleshooter from the link below and see if it resolves the issue:.

The troubleshooter fixes some issues that might prevent your apps from running, including incorrect security or account settings. Hope this information helps, do let us know if the issue persists, we will be happy to assist you. Now forward GMail to the new Microsoft email address and everything shows up in one account viewable in Outlook client. So having the default set to sync ALL folders when only the Inbox needs to sync seems to be a poor default.

And the strange thing is that with devices like smartphones, they can connect to Gmail accounts and show all the data in all the folders though it may not all be synced to the phone since it would fill up the storage without lengthy delays. So it appears that the default for smartphones is to just sync the Inbox and to sync on the fly, other folders when they are selected.

Your comment about it taking several hours when first doing a sync I agree with. I also know that and I expect that. But once the initial sync is done, then the syncs should be quick, but they weren't due to the continual synching of all the folders.

I can live with the first sync being "slow" as I know it has to sync 11GB or 3GB or whatever is in the mailbox. I fully expect that. And I tell my clients that if they need to send mail and fetch new mail, to close Outlook, wait a few seconds for it to close in the background and then launch it again. Then Outlook will first send mail in the Outbox, check for new mail and then get back to the sync process.

Once everything has synched, then this is not necessary. As far as using webmail, I would have to disagree. There are MANY reasons for using a local email program: having mailto: links work without having to do special setup, being able to have all the mail on the computer and scroll through it really fast without having to wait for page loads from a webpage, being able to use adding like label printing programs if that's needed, bing able to mail merge contacts, having Mail, Contacts, Calendars and Notes in one nice uniform program, etc.

While I agree that webmail is going to the source and I always check the webmail interface when making sure credentials are correct, etc. And if you advocate webmail, what do you do on a smartphone? Do you use webmail or do you use the built-in mail program go Google Mail, etc?

I could not stand to use webmail on a smartphone due to the size of the screen and the constant refresh of data and the need for a continuous data connection. MSouthworth I've heard back from my client and he said it's "lightning fast" so I think that was the trick.

In reality, it's not a lot of settings. Select the Use the custom behavior defined below. To continue this discussion, please ask a new question. What's going on? My ME version is Another point to make. This all started after I moved ME to another server last month. The new server is using Windows Server and is a much faster system. But maybe there was a tweak or setting I applied a long time ago in the old server. Any help is appreciated. At the same time my latency increased a lot 30ms to over ms , but as I have seen, that does not seem to be an issue with both Thunderbird and Outlook with small mailboxes.

When I migrated Mailenable to the new server, I exported the whole setup including all registry settings, so basically nothing on that side has changed in the past months other than upgrading to newer Mailenable versions. I have taken a copy of my Mailenable server and my large mailbox and put both on VMs, configured Outlook from scratch and everything worked fine. So all I have remaining now to be the problem is big mailboxes and I mean total size, all folders and emails, not just the Inbox as mine has few emails and latency affecting how things work.

Maybe something to do with the way Outlook talks to the server, that I am unsure at the moment. Maybe Outlook is looking for Exchange because of something Server responds to? Just grasping at this point. And you are correct, large mailboxes are MUCH slower than small ones. Why is that? The only reasonable answer is constant syncing.

Maybe whatever ME tells outlook to not sync already synced email, is not working. Come on ME peeps, look into this. I will be forced to move to another email server at renewal time if you don't fix this. All systems and software fully patched with everything I could find. It did take a long time to sync the initial mailbox down to the client, but I would expect that as its a large mailbox with 's of emails and 's of folders.

For more information on how to improve Outlook performance when using MDaemon Connector, you can review our Improving Outlook Performance how-to guide. Performing the following housekeeping tasks regularly will help minimize the amount of data that Outlook must process, and will reduce the amount of memory used by the program. When Outlook is installed for the first time, it comes with its own set of add-ins. Here is a list of default Outlook add-ins:.

This page contains a List of all default Outlook Add-ins, plus other add-ins you might encounter. In addition, other third-party applications can add their own Outlook add-ins. Locate the Manage drop-down menu at the bottom, and select Com Add-ins, then click on Go. You can also use the Remove button to remove selected items completely.

For some add-ins, you may need to restart Outlook for your changes to take effect. If you have a lot of RSS feeds that are synchronized with Outlook, these syncing tasks could bring Outlook to a crawl. Go to File Options. Click on the Advanced button in the left-hand navigation menu. Under the RSS Feeds section, uncheck both options.