When I attempt to send an email existing in Daylite, I see an error

Symptom

When sending an email working in Daylite you receive the following error:

Why is this problem occurring

This error comes up when the email message you are trying to access cannot be found in Mail.

Solution

• The email message itself does not exist in Mail. It may have been deleted or not downloaded from the Mail server. 
• The email message ID is encoded differently due to an operating system upgrade. 
• The Mail server account has not been set up.