send picture via SMS

as I am waiting for my SIM-900 board to arrive, I am trying to find how to take and send a photo over cell network for my mailbox notification project.

photo is to a cell phone, so it does not have to be high res.
trying to see letters or packages,

Pictures would be sent via MMS, not SMS. A Google search for 'sim900 mms tutorial' should turn up some examples.

I think a SMS is limited to about 170 bits/slot less error correction ... you can't send much of a picture with that.