Daylite Mail Assistant Could Not Look up the Related Message

When selecting an email within a conversation in Mail, the Daylite Mail Assistant shows a message that the Daylite Mail Assistant could not look up the related message.

This happens when you select a message within a conversation, which displays from various folders as a conversation. However, Mail doesn't give access to the email's message-id, which Mail Extensions need to access the email's contents.

To address this, you can add a custom message header with the message-id. Follow these steps to add it:

1. Open Mail and select Settings
2. Click Viewing
3. Click the menu next to Show message headers: and select Custom
4. Add a custom header by clicking +
5. In the text field type message-id
6. Click OK

Once you've added you will see the message-id within the email header, allowing Daylite Mail Assistant to access the contents of related messages within a conversation.