I m on F1 visa and have to get my stamping for the extention. i have heard that i can get the stamping for F1 without leaving US and by just sending my passport and essential docs to the agency. Can someone tell me if they know anything about this process.

Are you talking about the entry visa or the I-20? Each are very different.

You should have your topic moved in a more accurate forum. F-1 status has nothing to do with this forum.