Failed e-mail tips

		The Failures options can be used to deal with undelivered e-mail based on either the Sender or the Subject, or parts of them. E-mail is sometimes returned to you as undeliverable, there are several reasons:
		The e-mail address was incorrect
		The account has been closed
		The host exists but not the account
		The mail-box is full
		For each e-mail account you can set up rules to detect returned e-mails. You will see a bin for each account in the E-mail screen, this holds any returned e-mails.
		Tips on the Sender
		If you got the e-mail address wrong or the e-mail address does not exist, your original e-mail will be returned by your service provider. In this case, the Sender will always be the same, making it very simple to detect. For example:
		Sender is undeliverable@friendlymail.com would match any messages from that exact address.
		Tips on the Subject
		If the e-mail was sent to a valid e-mail address, it may be returned if the mail-box is full or if the account name (everything up to the @ symbol) does not exist. In this case, your original e-mail will be returned by the e-mail host for whoever you were e-mailing, so there is no way to match the Sender, you'll have to use the Subject. Typically, the Subject of the returned e-mail will contain words that you can look for, most commonly:
		undeliverable
		delivering
		returned
		failed
		problem
		Tip It's best to wait until you get some e-mail returned to you to see what the subject says, rather than guessing, because you might end up filtering out legitimate e-mails by looking for the wrong word.