Singapore - Foreign Resident Requirements
Don’t forget to renew your visa and immigration documents before they expire.
It is by no means compulsory but it is advisable to register with your embassy’s consular section. Most embassies will keep a list of their nationals' contact details so that they can be contacted in an emergency.
The American Embassy for example has an email service for
receiving information such as travel warnings, voting information and
consular service notices. Check the website of your embassy for similar