How to check if the mail you’ve received from Instagram is actually genuine

Facebook has added a new feature for its popular photo and video platform, Instagram, that allows users to check whether the mails received on behalf of Instagram are genuine or a spam. The new feature might be a result of a scam reported by a security firm last month. As per the report, the hackers were sending users an email stating they have violated the Instagram copyright laws and their accounts will be deactivated within 48 hours. The mail was all about asking feedback from users to make them part of the scam.
Although, the new security update is being rolled out in a phased manner so it might take some time based on the region you are in.