When you receive emails in Outlook and want to archive them in a folder on your computer, you can save them as PDF. The procedure is simple on both PC and MAC.
Steps
Method 1 of 2: Back up in Windows

Step 1. Open Microsoft Outlook
Open menu To start up, click on All the programs, expand the menu Microsoft Office, then select Outlook.

Step 2. Select the message
Click on the message you want to save. This will open the reading panel.

Step 3. Click on the File menu
It is located in the upper left corner of the window.

Step 4. Click Print
The command is in the column on the left of the screen.

Step 5. Click Printers
This will bring up the list of printers and options.

Step 6. Click Microsoft Print to PDF
The order is in English. She says to Outlook print the message as a PDF.

Step 7. Click Print
The command is illustrated by the large printer icon located under To print. This will open the window Save printing as.

Step 8. Select the save location
Navigate to the folder where you want to save your file.

Step 9. Name your file
Type the name under which you want to save your file in the box File name of the recording window.

Step 10. Click Save
Your file is now saved in PDF format in the folder you selected.
Method 2 of 2: Back up in macOS
Step 1. Open Outlook on your Mac
You will usually find it in the folder Applications, but also in the Launcher.
Step 2. Select the message to print
Once selected, it will appear in the reading panel.
Step 3. Click on the File menu
It is located in the upper left corner of the screen.
Step 4. Click Print
This will open the print window.
Step 5. Click the PDF drop-down menu
It is located in the lower left corner of the window.
Step 6. Select Save as PDF
Step 7. Name your file
Type a name for your file in the box Save as.
Step 8. Select a backup folder
To select where to save your file, click on the arrow next to the field Save as, then navigate to the desired folder.
Step 9. Click Save
Your PDF is now saved in the folder you selected.