not sending order to user e-mail

[indela]

hi all

i was ordered the items that time showing the message like this


Email Addresses

Your order will be sent to the following email addresses:
[e-mail]
Your may update these in your Profile.

You may add other comma separated email addresses here that will be used only for the current order:


but after ordered items but not receive email.

what is the problem here. please help me

thanks