When you create a request for your client, reminder emails will be sent automatically if it is not completed within certain timeframes. There are 3 reminder emails and they trigger 24, 48 & 96 hours after the previous email has been sent.
i.e. the initial email on day 1, reminder on day 2, reminder on day 4 and a final reminder sent on day 8.
You may like to turn these off if you like. Just go to Your Account, Settings, Credit Ready, Reminders Configuration, as shown below.
Pending Requests
Reminder emails are only sent when enabled and when a request is pending. If you delete a pending request any scheduled reminder emails will be cancelled.