Official contact details requirement: income-tax authorities must include email, telephone, fax to facilitate electronic interface in all taxpayer communications. Income-tax authorities are directed to invariably mention their official e-mail Ids along with official telephone numbers/fax number in all notices, letters and communications issued to taxpayers to facilitate electronic interface and statutory compliance; supervisory officers must monitor compliance by random verification and furnish missing contact details immediately in time barred scrutiny cases and statutory notices issued during the current financial year.