I sent my RFE by USPS Priority Mail with signature confirmation last week. First the tracking status showed "notice left", and on the second day, it showed " delived at 5:26am". (so surprised that INS picked up the mails so early!) But till now, I haven't seen any online update about receiving my RFE. I searched on this site, and quite a few friends got the update the same day when USCIS received their RFE. Has anyone sending RFE to TSC got quick update? As the deadline draws near, I am anxious that they did get the doc.
Thanks for sharing your experiences.