This article explains two ways to view a full email message in Gmail on your desktop.
How to forward an entire email thread in Gmail – Conversation View
Gmail cuts every email message larger than 102 KB and generates a link to the entire message. When a long Gmail message ends abruptly with "[Message cut] View entire message," you won't be able to see the rest of the email.
However, Gmail doesn't clip messages when formatting them for printing, so you don't have to type them out to read them in their entirety.
When you receive a long Gmail message and you want to view the entire message in its entirety on the screen:
