Do you have a sample completed form 1583 that I could use as an example to understand how it should be completed by the customer? → October 06, 2020 22:30 Updated We do. See Form1583.pdf Related articles How to Complete Form 1583 What software tools is SphereMail integrated with? → Is there any sort of agreement or terms of service (similar to this page) for mail customers? Where does it live and is it different depending on whether the customers come through SphereMail or directly through our site? →