How do I delete a bunch of emails at once?

If you're using email software such as Outlook Express, Eudora, Netscape, Thunderbird, etc.:

To delete a block of messages, in the list of messages click on the first message you want to delete.  Then hold down the <Shift> key on your keyboard and click on the last message you want to delete.  All the messages between the first and last one you clicked will be highlighted, and clicking the Delete or Trash button in your Toolbar will delete them all. 

To delete selected messages, click the first message, then hold down the <Ctrl> key on your keyboard as you click on each of the other messages.  Each message you click will be highlighted and clicking the Delete or Trash button in your Toolbar will delete them all.

If you're using the Boreal web mailer:

Click the checkbox at the top right of the list of messages - the one that's just above the list of messages.  This will select all the messages on the page.  Click the trash can icon at the top right of the page to move them all to your Trash folder.  Or, select '--DELETE--' from the drop-down box near the top right of the page and click the Move button next to it to delete them all.