Sending a thank you note is a must after a job interview. With that said, you cannot just send any thank you note and expect it to be well received. If you are going to send a thank you letter it does not just have to be written well, it needs to be something that you would be happy to receive if you were the one doing the interviews. The Muse gives you a heads-up on five ways your thank you note could lose you that job that you were going for. You can read all about it at http://muse.cm/1HeFP5Z.