Why the e-mail lottery is not open

The text file in the e-mail can be opened, but the color map is not open.

Elimination process

This is related to the message, intuitively, a common e-mail message can be a plain text type, or it can be a hypertext class

With color, the e-mail message belongs to hypertext Mail.

If a hyperlink in a hypertext message is a relative address, and the message's attachment contains the color map (this type of message is often

The mail editor is often used to edit the message, the recipient will be able to browse the image when the message is received;

Hyperlinks in hypertext are absolute addresses (this type of mail is often sent directly to the mailbox) and the recipient views the

e-mail, the mail software will look for the image file according to the absolute address indicated in the message, if there is no Internet connection at this time, or

The server fails, and the recipient does not see the picture in the message.