Please follow below steps to create a search folder by dynamic date range in Outlook.

1. In the Mail view, select the email account that you will create a search folder within, and then click Folder > New Search Folder.

2. In the New Search Folder dialog box, click to highlight the Create a custom Search Folder option, and click the Choose button. See screenshot:

3. In the opening Custom Search Folder dialog box, type a name for the new search folder in the Name box, and click the Criteria button. See screenshot:

3. In the popping out Search Folder Criteria dialog box, go to the Advanced Tab, and then:

(1) Click Field > Date/Time fields > Received or other time filed as you need;
(2) Select an option as you need from the Condition drop down list. In my case, I select  on or before;
(3) In the Value box, type the dynamic date range as you need, such as 45 days ago, 10am yesterday, 2 weeks ago, etc.;
(4) Click the Add to List button.

Note: You can also select common dynamic date range from the Condition drop down list, such as Yesterday, Today, Tomorrow, in the last 7 days, in the next 7 days, Last Week, Last month, etc. See screenshot:

4. Click the OK buttons successively to close all opening dialog boxes.

So far it has created a search folder with all emails received in the specified dynamic date range.

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