Consular filing the i-130 - Can it be sent by post

Sorry, I've been reading everything and I don't understand if, when you file the i-130 with the consulate in London, if that has to be filed in person or can it be sent with the fee by post?  And if so, what is the address.

The information even on the government's website seems a bit scattered and lacking in detail.

Well, so I think I've answered my own question.  It appears from what else I've read that you can.

I know this post is a little old but for anyone filing at the London Embassy be sure to read the new guidelines on their website!

http://london.usembassy.gov/dhs/uscis/i130filing.html [nofollow]