tools/mail.py should return a non-zero exit status when invalid command line args are given
tools/mail.py should return a non-zero exit status when invalid command line args are given

mboersma/mailinabox,mboersma/mailinabox,mail-in-a-box/mailinabox,m4rcs/mailinabox,pierreozoux/mailinabox,mail-in-a-box/mailinabox,pierreozoux/mailinabox,jjz/mailinabox,jmedding/mailinabox,jjz/mailinabox,pichak/mailinabox,b-deng/mailinabox,b-deng/mailinabox,pierreozoux/mailinabox,PortableTech/mailinabox,PortableTech/mailinabox,b-deng/mailinabox,Toilal/mailinabox,d5ve/mailinabox,jprice/mailinabox,PortableTech/mailinabox,Toilal/mailinabox,hnk/mailinabox,jmedding/mailinabox,mboersma/mailinabox,jjz/mailinabox,mboersma/mailinabox,pierreozoux/mailinabox,mboersma/mailinabox,Neopallium/mailinabox,mail-in-a-box/mailinabox,d5ve/mailinabox,d5ve/mailinabox,jprice/mailinabox,b-deng/mailinabox,Neopallium/mailinabox,m4rcs/mailinabox,Neopallium/mailinabox,pichak/mailinabox,brocktice/mailinabox,brocktice/mailinabox,hnk/mailinabox,nstanke/mailinabox,jmedding/mailinabox,Toilal/mailinabox,nstanke/mailinabox,choltha/mailinabox,Neopallium/mailinabox,Toilal/mailinabox,jprice/mailinabox,choltha/mailinabox,pichak/mailinabox,choltha/mailinabox,hnk/mailinabox,jjz/mailinabox,brocktice/mailinabox,PortableTech/mailinabox,m4rcs/mailinabox,ianberinger/mailinabox,nstanke/mailinabox,hnk/mailinabox,jjz/mailinabox,Neopallium/mailinabox,nstanke/mailinabox,brocktice/mailinabox,pichak/mailinabox,nstanke/mailinabox,PortableTech/mailinabox,ianberinger/mailinabox,pierreozoux/mailinabox,jmedding/mailinabox,brocktice/mailinabox,ianberinger/mailinabox,jmedding/mailinabox,jprice/mailinabox,ianberinger/mailinabox,d5ve/mailinabox,choltha/mailinabox,m4rcs/mailinabox,ianberinger/mailinabox,choltha/mailinabox,jprice/mailinabox,mail-in-a-box/mailinabox,d5ve/mailinabox,m4rcs/mailinabox,b-deng/mailinabox