I have a very large E3 mailbox more than 20GB with archive turned on. Everytime it is reaching its maximum 25GB capacity, I will start to manually copy folders containing email into the online archive using Microsoft Outlook client.
The Inbox has many sub and sub-sub folders. I will create the sub folder in the archive and copy the sub-sub folder to the new created sub folder. Once the copy is done, I will delete the original sub-folder in the Inbox. The mailbox is configured as non-cache mode in Outlook.
Only recently, I noticed that the emails in the sub-sub folders become rich text and the attachment appears in the body of the email instead of the header part together with the To/From/Subject fields. This is unacceptable.
Because I do this often, I have a dedicated computer just to do this transferring so there should be no chance of a user setting change in Outlook client unless a Windows Update changed it. Not sure if the new upgraded OWA/O365 is causing it.
When I open the copied email, it opens in Rich Text Format and the file icons appear in the body textarea. I can manually change the format to HTML and the attachement will be automatically placed in the header section with the To/From/Subject fields. But it is still unacceptable as in some cases, HTML images like company logos etc that are not suppose to be "attachment" will also be included due to the Rich Text Format treating the images all the same as other document attachments.
Can anyone advise how to troubleshoot or solve this problem?