Cardinal numbers

One and two
Let us do
Three and four
Let us go
Go to work
Go through mails
Mails recieved
Mails to read
Five and six
Stuff to fix
Seven eight
Until late
Nine and ten
Mails to send

One and two
Hundred new
mails for you
Three and four
Back is sore
Five and six
feet under
In your grave
another mail