Return to India, but maintaining US investments

[naimh]

Folks who have returned to India, but still maintain investments in US via trading platforms like Fidelity, eTrade, how do you update/maintain US address? Do they accept Indian address? I am not looking forward to giving friend's or relative's physical address.
10.0.0.0.1 192.168.1.254
Also, I recently came across Virtual Mailbox, is this legit? Can anyone share their experience please? Thank you in advance.