This message wasn't delivered to anyone because it's too large
The workflow notification that go out to the approvers when a expense report is submitted is not being delivered to the approver.
The message reads: This message wasn't delivered to anyone because it's too large. The limit is 15 MB. This message is 19 MB.
Instead these notifications are being sent every 2 minutes to the same mailbox but is coming back to us as undeliverable.
Is the message due to the mailbox size of the user or is there a configuration on the application side that we need to extend?