Outlook 2007 .pst keeps getting much larger

[Lysdexic]

I delete all mails I no longer want and compact, PST is 134mb, I open the
next moring and it is 157mb, I close and use Personal Folders Backup and it
has gone to 190mb. What is adding to this PST file?

 

[DL]

You allready posted this some days ago, and received responses