I just learned that these e-commerce sites are using your email data also for detecting spam accounts believe it or not. Everything about your account is playing a role in suspensions and restricted when signing up
From this website
https://www.digitalinformationworld....fraud.html?m=1
How Businesses Analyze Email Risk Scores To Prevent Fraud
Email risk scores are calculated based on a variety of information collected through the reverse email lookup process, including:
• Email address validity: verify if the email address is real using an SMTP check.
• Email domain type and quality: evaluate the trustworthiness of the domain, check the age of the email address, and verify the user’s real name. Custom domains and services that require users to go through a verification process are more trustworthy while email addresses that are easy to create through services that don’t require SMS or other verification could be more suspicious.
• Social media profiling: check social media accounts associated with the email address. A social media presence indicates a lower chance that the email is used by a fraudster. Also, you can get information about the email owner’s name, location, workplace, and bio to inform risk assessment without any lengthy research.
• Data breaches: see if the email address has been involved in data breaches. If an email address has been in a breach, it is seen as lower risk because it can be verified as being used a while ago.
• Email blacklist: check the email address against known public blacklists compiled by fraud prevention, cybersecurity, and private companies.
• Email address quality: evaluate how likely the email account was created by a real customer (instead of a bot or fraudster.) String analysis is used to determine if the email address looks genuine. For instance, if the name that appears on the handle and account are different, the email address is more suspicious.
An intelligent fraud detection tool leverages methods such as name matching, geolocation, and proxy reputation to paint a composite picture of the buyer. Businesses can then get instant results — along with an email risk score — to help assess the full risk profile of a transaction in real-time.
An adaptable email analysis tool also allows you to customize risk thresholds based on the nature of your business. You can set specific risk score ranges to help inform decisions on whether to approve, review, or decline a transaction.
Restricted account for using fresh email address 
