When I receive my daily forecast email, parts of the message are missing.
This is usually because your email client is blocking images. Hotmail and Yahoo! Mail are two common webmail interfaces which will block the images.
In Hotmail, a message above the forecast email will read:
Attachments, pictures, and links in this message have been blocked for your safety. [Show content]Click the link which says 'Show content'.
In Yahoo! Mail, a message above the forecast email will read:
This message contains blocked images [Show Images]Click the 'Show Images' button