Policy
Change the limit for the number of nested embedded messages
By default, the limit is 50 embedded messages when an e-mail message is converted from MIME to MAPI. The number can be set to any positive integer. This helps prevent scenarios in which Outlook hangs while attempting conversion.
Pack Microsoft Office
Category Microsoft Outlook 2016 / MIME to MAPI Conversion
Policy ID
d46d4f1b888a Internal name
L_Changethelimitforthenumberof Registry
Copy registry mappings
HKCU\software\policies\microsoft\office\16.0\outlook\options\mail\embeddedmessagelimitPolicy notes
By default, the limit is 50 embedded messages when an e-mail message is converted from MIME to MAPI. The number can be set to any positive integer. This helps prevent scenarios in which Outlook hangs while attempting conversion.