List Zoho Mail Accounts
Retrieves all Zoho Mail accounts associated with the authenticated user. Returns account details including accountId (required for other mail operations), email addresses, storage information, account status, user preferences, and security settings. Use this action first to get the accountId needed for subsequent mailbox, message, folder, and email operations. The accountId is a unique identifier for each mail account. Typical workflow: List accounts → Get accountId → Use accountId in other mail operations.