Is it safe for local Outlook data files (.pst or .ost)?

I am using MS Outlook since last 8 years. Therefore, I need assurance that it would be safe for my email data files.

However, I can use software like Stellar Phoenix Outlook PST Repair to fix Outlook file issues, but want no mess with important client’s emails.

Please suggest.

Hi Richard

I’ve been using CIS 8 through 8.4 and now 10, on Outlook 2007, 2010 and now 365 on Windows XP, 7 and now 10 with no errors or problems whatsoever; using several webmail, POP3 / IMAP and Exchange accounts during that time

I think you can rest assured, your emails will be safe