title: automatic set reply-to header in osx mail
body: <p>I use a google account, say myaccount@google.com for work and I use aliases for the various projects I'm working on. Thus, for project1, I use myaccount+projet1@google.com, for project2 myaccount+projet2@google.com and so on. I do not need to add additional account in Mail since GMail ignores what's after the "+" sign.
  Now, in the configuration of my mail account, I put all the addresses (including the ones with aliases) in the "Email address" field, separated by commas. So I can send a message from any of my emails myaccount+project*@google.com.</p>
  
  <p>My question is about the "reply-to" header that I have to manually choose in order to receive the mail in the right folder. I looked in the settings and could not find a solution. Do you know any way to do it automatically (set the reply-to header the same as the from)? Apple script perhaps?
  I know that I can use the "default write" command but that only allows to specify one specific "reply-to" header to all the emails, which is not what I'm looking for.</p>
  
  <p>Thank you in advance.</p>