to our end?

I was trying to write a formal english letter at my workplace.

And I was writing, pls send the document to our end at an early date.

Could someone help me if I used the right sentence? Or should I say, Expecting an early from your end.

And another question I would like to ask is, when it comes to a deadline of a shipment,

Can I say, Due to the departure is around the corner, pls send B/L at your earliest convenience?

I am not sure if I used the idiom, around the corner correctly.

 Much appreciated.

 Any suggestion is welcomed.