Hi @mehdilamranikpl, To change the email address associated with your Databricks account, you can follow the steps below:
1. Log in to the Databricks account console as the account owner or an account-level administrator.
2. Go to each workspace and export any data or notebooks you want to import into a different account.
3. Delete all workspaces.
4. Click the **Settings** icon in the sidebar.
5. Click **Cancel plan**.
6. In the confirmation dialog, click **Confirm delete**.
Please note that this process will cancel your current Databricks subscription and delete all the workspaces associated with your account. After completing these steps, you can sign up for a new subscription using the new email address.