Using Classic Outlook on Windows for personal email, calendar, and contact management
I got it to work with these instructions:
****documents/outlook/3935-outlook-search-folder-dynamic-date-range.html
E.g.
Make search folder \ user defined \ Criteria \ advanced\ Received \ Between \ 45 days ago and 90 days ago
Make sure to select the folders you wish to search in
Here is a video that explains how to set it up though it does not use the 45 days ago and 90 days ago, which is from the upper link.https://support.microsoft.com/en-au/office/video-use-advanced-criteria-in-a-custom-search-folder-e75b8cfa-3140-4654-974e-3dc1f223ac65