A good welcome letter should be short and sweet because the New CSA will be overwhelmed by all the new training information, new jargon,and all the new daily activities.
Such a welcome letter should read as follows: "Hello (name), My name is (name). Welcome to SFI, a great place with great opportunities. I am here to help you with any questions you may have. My email address is (email address). I look forwarding to hearing from you and helping you to be successful."