
To expand the email body description editor by default in Dynamics 365, you can configure the enhanced email experience. Here are the steps to achieve this:
Enable the Rich Text Editor (RTE) Control:
Modify the Web Resource File:
msdyn_EmailRTEconfig_reference.js. If it's not editable, create a new web resource file by copying the content from the existing file.Map the Web Resource File to the Enhanced Email Form:
These steps should help you configure the email body description editor to expand by default in Dynamics 365