Need help on mail command

I want to mail the output of this command

df -k | sort -rk4  | head -2 | tail -1

to xyz@gmail.com and i want to print the output in the command prompt also

How to do

TIA

tee /dev/tty ?

out=`df -k | sort -rk4  | sed -n 2p`
echo "$out"
echo "$out" | mail ...

i used this but the output is not coming in mailbox

out=`df -k | sort -rk4  | sed -n 2p`echo "$out"echo "$out" | mail ...

Please use code tags as required by forum rules!

Are you sure that was your command line? Where would you expect it to mail to?

Does this do what you want?

df -k | sort -rk4  | sed -n 2p | tee | mail ...