i ma not delete my email all togahter ?

e-mail from your ISP inbox? What protocol: POP or IMAP? What application do you use to access it?
In this case, you can usualy delete one or several e-mails using the "Delete" key on the keyboard or use the delete button of your e-mail application.
Use Ctrl + click on the unwanted messages to sellect and delete several messages at once.

e-mail from some web mail? What web mail provider do you use? In this case, the browser used should not have any relevance.
You should have a "Delete" button somewhere over the message. From the inbox, you can sellect several messages and delete them all using the "Delete" button over the list of messages.

If you accidently delete a message, you can retreive it from the trash or deleted items folder.

Electro
October 2011