Sync two Exchange email accounts.

I have two exchange email accounts. One account is configured on Exchange server 2010 in our company domain. The other is Office 365 for business.  Both accounts are configured on several different computers all of which are running Outlook 2016 under windows 7. Both email accounts are configured within the same profile so that they are visible in one instance of outlook.

 My calendars and contacts synchronize between the accounts. However I'm not finding a good way to synchronize the email folders. I've  created rules to create copies of new emails in the opposite account, but this method created more work than it eliminates.

My questions is: Is there an easy way to synchronize the email in these two accounts through outlook? If not is there a third party application that will do it.

Thanks in advance fro your help!
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David Johnson, CD, MVPOwnerCommented:
I don't know the reasoning or the rationale of what you are trying to do.
At each server At the account level you can get the mail from the other account using connected 365 connected accounts
mwmatvAuthor Commented:
Thanks for your response. I know my request must seem a little odd. I'm not sure how long we will be supporting both exchange accounts and i wanted to have some additional redundancy and synchronization in case we stop supporting one account or the other. Searching email is also much easier if everything is in one account.

It would appear that Office 365 Connected accounts doesn't support additional exchange accounts, only IMAP or POP3 are listed.
David Johnson, CD, MVPOwnerCommented:
you could create a transport rule on each server to forward from one server to the other. This will not be a true sync as there is no allowance for unread/read messages being synced

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mwmatvAuthor Commented:
Sorry to be so slow to respond. It's been very hectic the last few days. Microsoft's security update was creating problems in outlook.

I don't think there is a better answer than the idea you presented. We probably need to decide which system better supports our needs and transfer the accounts.

Thanks again for your help.
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