Since your atlassian account is managed by your organization, it can only be deactivated or deleted via the Managed Accounts screens. Info on how that's done can be found here: https://support.atlassian.com/user-management/docs/delete-a-managed-account/
When using an Atlassian account that is not managed, it’s possible to change the email address, but we often receive the following notification on the email that we want to use: Sorry, we couldn'...
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