Every minute there dozens of e-mails are sent from our application and our shops. Many questions to our support are related to e-mail.
The most common problems why e-mail is not received:
An overview of sent emails can be found at Settings > Logs (at the bottom of the page). When an order is placed two e-mails are sent: one to the customer and one to the merchant. Because these e-mails are more or less the same, only the e-mail to the customer is saved in the logs.
Sent means that the email is successfully sent from our mail servers. There is no guarantee that the email is received: this depends on the email provider of the receiver.
At Settings > Account settings you can change your email address.
Try using a Gmail e-mail address. This service is free and has correctly configured spam filters.