Textiful can send you a notification email each time a user completes their opt-in for your keyword. This notification would be sent as soon as all information is collected from the user and they've received the confirmation text message.
To enable notification emails, check the "Send me a Notification Email about each opt-in" box in Step 3 of your keyword options page. Set the emails that you would like to receive the notification by clicking the "Email Notification" tab. You can enter multiple email addresses to receive the notification by separating each with a comma.
Here is an example of the notification email that is sent. It includes the keyword that the user joined as well as all collected information from that individual.