HEAT 2015.2 - Email Listeners With Outlook Office 365

I have set this up for customer's without issue, its nicer in 2016.1.1 as you can use native Exchange web Services for the connection and testing.

But here are the settings from the MS Website:

I use IMAP on port 993 with Plain authentication.  You may need to make changes to the 365 Exchange server to enable the IMAP4 services and relaying if needed.

We have multiple inboxes for over 4 years with no problems.  Here is a screen shot of my server configuration (with address and user name blanked out):

Hi Ryan,

In general it works with Office 365 Mailboxes. But it depends on the type of mailbox you want to use. When you plan to use a personal mailbox, this would work, but this mailbox consumes one Office 365 license. When you plan to use a shared mailbox, this will not work because you'll not get credential for external access for a shared mailbox.

But there's a trick to bypass this issue (a friendly guy from Office 365 told me that trick). You have to create an office 365 user with the mail address you want to use. Once this user is created completely, convert his mailbox to a shared mailbox. Once you've done that, you can revoke the office 365 license from that user. Be aware that you must not delete the user. If you do so, the associated shared mailbox will also be deleted!

Now you have a shared mailbox which can be accessed with the credentials of the original user account. I'm using this method successfully with an OnPrem Version, so it should work with Cloud as well