221(g) email for passport submission ? ustraveldocs or US consulate?

USA Visa Stamping - US Travel
1

The following is my timeline for 221(g):
12/16/2019- Dropbox appointment for H1 transfer/extension
12/19 - passport returned with white slip to appear for interview
12/30 - given 221(g) blue slip at interview in New Delhi Embassy
1/6/2020- submitted documents(client letter etc) through email

My question is: Whenever they are ready for the next step (hopefully passport submission for issuing visa), do they send email to the same id which I had used to send the documents? Also, who is the sender? Is it ustraveldocs?

2

I am not exactly sure on the email address. Users have informed that they get an email update.
Stay positive…sometimes, it can take time.
Do update here on the email thing what you hear back.