This article discusses the importance of sending a thank you email after you have been interviewed for a position. The author writes “Lately, the majority of people I interview have one thing in common. They’re all messing up on something that I think is very important when trying to get a job: the Thank You Email.”  This comment applies more generally to the importance of thanking people who have provided you with assistance, be they professors, colleagues, potential employers, mentors, and so forth.  It doesn’t take long to write a thank you note, and the effort is certainly appreciated by the recipient.  Thank you notes are part of professional behaviour and courtesy; even if it’s part of someone’s job to help you with your queries, it’s still polite and professional to thank them. Ensure, however, that you do not provide a pro forma thank you, i.e., one that reads like a form letter, as these can be perceived as meaningless; rather, ensure that your note acknowledges the nature of the assistance.