If you have a lot of email and store a lot of email in Outlook you may reference past emails often and do not want to waste time, (or clicks), resizing a column to see who sent the email, who it was sent to or maybe the subject. Can the columns be set to a desired width and stay that way?
Open Outlook and go to the folders you want to change the column width to. Open a folder and expand the column to the desired width. Click on View and then View Settings, (upper left side). Click on Other Settings and uncheck Automatic column sizing. Click Ok twice and you are done. Repeat for each folder.