How do I change domains from one email to another?

[Fuz]

I created accounts using an email that is now made redundant. Looking to transfer the domain to the new business email. Was advised to post a question to the community from an employee of atlassian. 

FYI, was not able to find my SIN license number. 

[Manisha Kharga _Appfire_]

Hi @Fuz 

The New Email Address must be released from the New Atlassian account so that the Email Address is available to be used on the Original Account:

1. Login to ID.atlassian.com with <NEW EMAIL ADDRESS> and change the Email Address to something else; this will free up the Email Address to be used on another Atlassian account
   1. This New Email Address must be something accessible; either a Personal Account or an Email Alias
2. A verification email will be sent to the Mailbox from Step 1; click on the link to verify the Email Address change
3. Log out and back into ID.atlassian.com using <OLD EMAIL ADDRESS> and change the Email Address to <NEW EMAIL ADDRESS>
4. Another verification email will be sent to the <NEW EMAIL ADDRESS>; click on the link to verify the Email Address change.

You can also refer to this link : https://confluence.atlassian.com/cloudkb/change-atlassian-account-email-addresses-969508513.html

Thanks,
Manisha