Control how to create messages in all accounts
How you want forwarded message text to appear: as an attachment or inline (in the body of your message).
check spelling before sending
Set this preference when sending regular messages that use an 8-bit character encoding (for example, Latin ISO-8859-3).
Check this option if want to be asked if you're sure to be ready to send the message when you're pressing Ctrl+Return in message editor.
Set the right margin for text in the message area.
The default character encoding
When unchecked only new messages use this default