«As per your mentioned description about “I am trying to access a shared mailbox of my business account (*** Email address is removed for privacy ***) by IMAP from my personal account (*** Email address is removed for privacy ***)”, we understand that you want to access shared mailbox from your personal account,
if yes, we would like to share such information with you that, we cannot access shared mailbox from personal account. Because, shared mailbox is associated with Microsoft 365 for Business email account.»
Well, I do access my business mailbox from personal account by IMAP. I have only to specify business account name (email) and password. And by the way, I
already do that by a different Outlook profile. The problem is accessing the shared one.
«From your mentioned description “However on my home pc I have a home account that is different, so the only way to access my business mailbox is by IMAP”, we are supporting Microsoft 365 email account as an Exchange online
mailbox in our forum community to avoiding some issue or situation. So, if it is convenient for you, please configure your Microsoft 365 business email account as an Exchange under home PC on Outlook desktop client by creating
new Outlook profile to access shared mailbox and check the result outcome.»
OK, let me explain again what I did. English is not my first language, so maybe I was not able to explain the problem.
I have two PC's. A desktop one, at office, and a laptop.
On the desktop one I installed my Office 365 for Business license which is linked to *** Email address is removed for privacy ***. On desktop I have a
single Outlook profile and I access my main mailbox and all the shared mailboxes I am authorized to by Exchange, directly. It works.
On laptop I installed my Office 365 Personal license because I use it for personal purposes and I do
not want to depend on the same office license. So I pay for
two different licenses. On laptop I created an Outlook profile called «Personal» to access all my personal mailboxes. They are NOT Exchange mailboxes, but IMAP ones.
However, because of Covid19 emergency, I work from home. So I need to access
also the business mailboxes. So I created another
Outlook profile on my laptop called «Work». I tried to add my business account as an Exchange account but it did
not work. So I decided to add them by IMAP. I have two business accounts: *** Email address is removed for privacy *** and *** Email address is removed for privacy *** (I have two Exchange licenses). I was able to add both of them by IMAP as follows:
MAILBOX: Main Office Mailbox
EMAIL ADDRESS: *** Email address is removed for privacy ***
TYPE: IMAP
INCOMING SERVER: outlook.office365.com
INCOMING PORT: 993
INCOMING ENCRYPTION: SSL/TLS
INCOMING USERNAME: *** Email address is removed for privacy ***
INCOMING PASSWORD: pswmain
OUTCOMING SERVER: smtp.office365.com
OUTCOMING PORT: 587
OUTCOMING ENCRYPTION: STARTTLS
OUTCOMING USERNAME: *** Email address is removed for privacy ***
OUTCOMING PASSWORD: pswmain
and
MAILBOX: Info Office Mailbox
EMAIL ADDRESS: *** Email address is removed for privacy ***
TYPE: IMAP
INCOMING SERVER: outlook.office365.com
INCOMING PORT: 993
INCOMING ENCRYPTION: SSL/TLS
INCOMING USERNAME: *** Email address is removed for privacy ***
INCOMING PASSWORD: pswinfo
OUTCOMING SERVER: smtp.office365.com
OUTCOMING PORT: 587
OUTCOMING ENCRYPTION: STARTTLS
OUTCOMING USERNAME: *** Email address is removed for privacy ***
OUTCOMING PASSWORD: pswinfo
It worked.
The first business account, *** Email address is removed for privacy ***, is also authorized to access shared mailboxes. For example, *** Email address is removed for privacy ***. So I tried to add also the shared mailbox by using
MAILBOX: Shared Office Mailbox
EMAIL ADDRESS: *** Email address is removed for privacy ***
TYPE: IMAP
INCOMING SERVER: outlook.office365.com
INCOMING PORT: 993
INCOMING ENCRYPTION: SSL/TLS
INCOMING USERNAME: *** Email address is removed for privacy ***\*** Email address is removed for privacy ***
INCOMING PASSWORD: psw
OUTCOMING SERVER: smtp.office365.com
OUTCOMING PORT: 587
OUTCOMING ENCRYPTION: STARTTLS
OUTCOMING USERNAME: *** Email address is removed for privacy ***
OUTCOMING PASSWORD: psw
This does not work. It connects, but instead of accessing the shared mailbox, it accesses a duplicate of the main mailbox. It is like it ignores "*** Email address is removed for privacy ***" after "*** Email address is removed for privacy ***" in incoming mail
username. Note that if I use another mail application, as Thunderbird, I can access the shared mailboxes in that way. It does not work
only by using Outlook.
Important: for good reasons I will not explain, I do not want to install Office 365 for Business on my laptop or create another Windows user on it. So, do not propose those workarounds, please. If I cannot solve that by Outlook I will have to install Thunderbird
or another mailer, to access business email, but I really think this is really a pity. I do not like that interface.
I hope I was able to clearly explain the situation, now.
