Electronic contact requirement: notices must include officer email and phone to facilitate taxpayer interface information. All notices, letters and communications issued by officers of the Department of Revenue, including CBDT, its directorates and field formations, must include the officer's e-mail address and office telephone numbers to facilitate electronic interface with taxpayers and the public. The requirement applies to every officer signing communications and supersedes the earlier letter dated 02.12.2015; offices are directed to strictly comply with this administrative instruction.