Email with Photo attachments

[#1]

Please can someone help me delete an email I tried to send with 4 photos attached but the file was too large and I got an error message back undeliverable.  However my mailbox is still trying to send them and I can't seem to delete the email?
Many thanks in advance.

[#2]

is that via webmail or direct from your computer

[#3]

The likelihood is that the e-mail is still sat in your 'Outbox' if you are using an e-mail client such as Outlook Express or Microsoft Outlook. When you find the e-mail, just delete it as you would do with a normal e-mail.
Hope this helps