Sent items are not displayed in correct folder - Outlook
Within Outlook it can happen that messages you send with a mail account from MijnHostingPartner.nl are not shown in the sent items folder. This is then put in another folder, or in an incorrect one. This article explains how you can set this up and where exactly it is.
When you have Outlook open with your mail account from MijnHostingPartner.nl go to File in the upper left corner and open the options.
Then you go to the Mail settings as follows:
And then check the following box to force this:
After this the messages will be in the sent items or sent messages folder. And the steps in this article are completed.