The following error occurs when saving a Delivery that uses Email Inbox destination:
EmailMessage has a maximum size of 2048...Value is too large
This error occurs when the character count in the message exceeds 2048 characters.
To work around the issue, you can use a Text object with the message text then reference the object in the Email Inbox delivery Message field with a macro. The Text object will accept up to 6000 characters and supports simple HTML tags for message formatting.
Text object with name "Daily Message" resides in folder path "Bursts\Daily"