Avatar of king daddy
king daddy
Flag for United States of America

asked on 

What is the max number of messages allowed in exchange 2016 / outlook 2013?


A user reached a limit of 1200 messages in his inbox and is unable to receive email. The previous admin set a limit of 1200 messages. Not sure why. A tech reached out to me and said he changed the "MaxObjsPerMapiSession" limit to 50,000. He was instructed to increase the number a messages allowed in the users inbox. I believe the wrong reg entry was changed. I believe this limit is an Outlook limit not Exchange. There is an MS article stating that the inbox can have up 100,000 messages before one may experience performance issues, but, again, it specifically mentions Outlook not Exchange.


Where would one increase the number of messages allowed in an inbox when on Exchange 2016 and Outlook 2013? Is there a limit or quote on a database level for number of messages in an inbox on Exchange?

Thanks for any assistance.

Avatar of undefined
Last Comment
Mark Wills

8/22/2022 - Mon