While registering for our product/services we request you to provide us with such information like the first name, last name, company business name, address, website address, email address. This is the basic data of yours that we process and store. We also store Billing contact (email address), Billing address, shipping address, Contact number for billing, Point Of Contact for rest of the conversation (Name, email, phone), address of the company as well as any additional address to whom invoice needs to be communicated.
We also store SMS data that is SMS content and phone numbers.
All information stored is in encrypted format. Along with the business related data,  account related information, such as customer id, company and fields is also stored.
You can find a full description of the data processing practices in our Privacy Policy: https://www.sms-magic.com/privacy-policy/