Background:
We are using Microsoft Office Outlook 2010 connected with Gmail account using POP3.
In a corporate enviroment, the email size increment daily, in my work, some persons have Outlook with 40GB!
Independly of program for backup (GIT, BUP, Bacula, etc), when a binary file is changed, file must be copy completely again.
Outlook have a function to "archive" messages, it can to configure to execute each x days and to archive messages old than an especific time. The help of this function of to archive is the size of main pst can be small, but when archive is executed the pst related is change (archive.pst) and the size of main pst is translated to an archive.pst, the problem still.
How to config the Outlook to split in several pst, and get changes in small PST files for optimal backups?
By example to implement in Outlook the style of logs of Apache HTTPD Server: access_log access_log.1 access_log.2 access_log.3 access_log.4
Best Answer
In addition to the 'usual' Auto Archive that takes mail off the Exchange server or main inbox but only to a single archive file, I do manual archives (File > Archive) per date, e.g. one PST per trimester. These will then not change at all, and I can even avoid opening older PSTs if they're not needed. You can probably write a macro for this, as there is no built-in feature to do it in Outlook 2007 or 2010.
See this Microsoft support article (same applies for Outlook 2010):