Dear valued customer,
This is <Your Name> from <Your Store>.
Due to the current amount of orders and volume we are getting in the past 2 weeks, we will be experiencing slight delays on our product shipments.
We are committed to working with our logistics department to provide you the fastest possible service and ship your order in the next 7-8 days.
We will keep you updated at all times on the status of your order and any further delays through this email.
We deeply apologize for any inconvenience caused and thank you for your business.