I recently attempted to switch OS X Mail from using POP to using IMAP to access my Microsoft Outlook (msn.com) e-mail account. In doing so all mail in my Outlook account older than a week disappeared.

Where did this mail go and how do I recover it?

FWIW, I've switched back to POP (IMAP appears not really to work), but the missing messages are still gone (and they're missing from outlook.com too).

And FWIW, here's what my "Activity" looks like after creating the Outlook.com IMAP account (while nothing beyond a handful of messages has appeared in my OSX client):

Meanwhile, the number of unread messages I see on iOS for the same account (synced using an "Outlook.com" account) is diminishing!

Weirdly, when (and only when) my network connection is interrupted (e.g. if my system sleeps) the number of messages in my MSN inbox jumps a bit.

  • check in setting there is option for how older you want to store – umeshkumar sohaliya Aug 13 '16 at 5:36

First, all your emails are still in your web version of MSN.

You need to switch the MSN to IMAP type and it is called Outlook (the web version) of Outlook, not the office version.

In your Mac Mail set up following:

Choose Account Type: IMAP.

Input the following as the Incoming Mail Server: imap-mail.outlook.com.

Choose to Use Secure Sockets Layer (SSL) for incoming mail security.

Input the following as the Outgoing Mail Server: smtp-mail.outlook.com.

Choose to Use Authentication.

Choose to Use Secure Sockets Layer (SSL) for outgoing mail security.

Depending how large your mail is it might take a while to transfer. To monitor the process turn on the Activity, located under the Window Tab in Mail app.

  • The messages don't show up on outlook.com (the web version). Those are the exact settings I used when I set up IMAP. – orome Jul 27 '14 at 20:50
  • What are your settings for Trash/Deleted messages? – Ruskes Jul 27 '14 at 21:11
  • For the original POP account, I don't recall. For the IMAP account that I attempted to set up whatever they were by default in the OS X mail client. For the restored POP account: "Move ... " is checked, "One month ...", which I think was the default. But the issue is that I hundreds of messages in my inbox that have vanished. – orome Jul 27 '14 at 21:20
  • I do not think they vanished. They are there in your Outlook.com, but probably moved. When changing the POP to IMAP the server needs time (sometimes hours) to sort the emails. Look in the Trash or Archive folders for your emails. – Ruskes Jul 28 '14 at 10:41
  • Nothing in "Deleted" older than a week, and I don't see an "Archive" folder; and nothing called "Trash" at all. – orome Jul 28 '14 at 11:22

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