too late to send thank you letter after interview?

[Dear Summer]

I sent thank you letters for the first and second round. I met with some more people this past Friday. Now it's Wednesday. I was out of town for the interview and got back into town a little late. Will it help me at all to send thank you emails to everyone? because I'm assuming that people already have an idea to hire me or not. Not likely that a thank you email will do anything at this point.

 

[pray4mojo]

Or they could still be undecided. I had an interview on Wed and I sent my thank you letter late on Sunday and got an offer on Monday.

 

[silverpig]

Send a paper thank you. Courier it asap.