.OST file , outlook, exchange

pramod1
pramod1 used Ask the Experts™
on
I tried to compact my mail box- OST file , i did it by going to mail icon under control panel ,

it reduced by 2Gb with outlook closed but when i opened outlook it went back to same size as original

we have outlook 2016 with mailbox on 365

how is that possible, did i miss any step, cant understand how it went back to same size after opening outlook
Comment
Watch Question

Do more with

Expert Office
EXPERT OFFICE® is a registered trademark of EXPERTS EXCHANGE®
Top Expert 2016
Commented:
the .ost is just a local cached copy of part of your exchange mailbox.
So either reduce the size of the online mailbox or turn off cached mode, or in account settings email account reduce the # of days you want cached.

Author

Commented:
I wanted to know how size became same after opening outlook

Author

Commented:
Does it have the feature reduce no if days in outlets ok 2010
Should you be charging more for IT Services?

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden using our free interactive tool and use it to determine the right price for your IT services. Start calculating Now!

Top Expert 2016

Commented:
I don't have outlook 2010 to test but it is simple for you to check.
SysToolsData Expert - Recovery,Backup,Migration

Commented:
120915_2259_Outlook20131.png
Yes, While Selecting Cache Exchange Mode, you can also select the Time period to store the data as a backup in OST File format.

Author

Commented:
Do we have this feature in outlook 2010
Top Expert 2016

Commented:
outlook 2010 only has cached or not cached.

Author

Commented:
so outlook  2010 has no feature of cache slider
Top Expert 2016

Commented:
correct cache is all or nothing.

Do more with

Expert Office
Submit tech questions to Ask the Experts™ at any time to receive solutions, advice, and new ideas from leading industry professionals.

Start 7-Day Free Trial