Big question is; where do your account originate from? As account aren't magically available, you need a kind of source
- You create them as local users in you app using the Account_Overview or alike
- Accounts are created as a result of a internal process of the app; i.e. when you add an employee to the app, the account is created based on the employee details
- As result of a SSO implementation the accounts are created according to the SSO rules/implementation.
In all scenarios you can easily determine the source of the email address
- Just type the email in the right text box
- When creating the account in the microflow, set the Employee/Emailaddress ass Account/EmailAddress
(Though in this case if you need the email in an other process I would fetch the Employee/EmailAddress)
- In the microflow which creates the Account set the Account/EmailAddress according to the SSO source
So; first answer the question “what is the source of your accounts”