This can be extremely frustrating for your readers. If you expect your message to be understood and welcome, it is imperative that you learn to avoid sending unreadable messages. If you are going crazy because many people are sending you what appears to be gibberish, here's how to read those messages. Reasons for Unreadable E-mail Message body not in plain text . Both of these formats allow the sender to apply formatting to the text but the entire message may appear garbled or completely unreadable to the recipient.
Attachments are a way of including any computer file as part of an e-mail message.
This is very useful for sending spreadsheets, pictures, or even programs, none of which can be expressed in plain text. But some readers cannot view attachments at all . Nobody can read all attachments because each type of attachment is in a particular file format requiring certain programs to read it. Even if the reader has the correct program to read a particular file format , the attachments may be encoded in a way that is not understood by the recipient's e-mail program. What is readable depends on who is reading it.