Email Not Completely Deleted after Deleting an account

How it was found

Description: If one of the user deletes their account it should be fully deleted in account while semmle doesnt delete it completely.

Steps To Reproduce:

• Register email1
• After registering, confirm your account.
• once email1 is confirmed. add another email which we will name as email2
• Now Verify the email of email2.
• Delete account of email1 completely
• Now register email2
• after registering email2, confirm the account of email2
• after confirming with the link given in email2 it will automatically logged in and you will notice that email1 and email2 is in there and no need confirmation for email1.

Fix/Remediation As per the rules, once you delete your data in an account it should be completely deleted. it should be another life for an account.

Impact

User know that after deleting account to semmle, their data will be lost to semmle's database however, it still there which is a privacy violation.