A few days ago, I forgot my Outlook PST file password, and it contained important client emails. Tried a lot of online tricks, but nothing worked. Then I found the
GainTools PST Password Recovery Tool. Seriously speaking, this tool is very simple; just select the PST file, and it shows the password in a few seconds. No data loss, no hassle. If you have also forgotten your Outlook password, then definitely try it once.