Short answer: yes. Send it within twenty-four hours, keep it to four or five lines, and make it specific to the conversation you actually had.
It will rarely win you a job on its own. What it does is keep you present while a decision is being made, and occasionally settle a close call between two candidates. For five minutes of work, that is a reasonable return.
Why it works
The people who interviewed you are seeing several candidates, often across more than a week, alongside their normal jobs. By Thursday, Monday's interview has faded. A short message brings you back into view at exactly the moment they are comparing notes.
It also does something a CV cannot: it demonstrates written communication, professionalism and follow-through in a real situation rather than as a claim on a page.
What to write
Four short paragraphs, no more:
- Thank them for their time, naming the role.
- Reference something specific from the conversation. This is the line that matters, because it proves the message was written for them and not pasted. A project they mentioned, a challenge they described, something you enjoyed discussing.
- Restate your interest in one sentence, ideally connecting your experience to something they raised.
- Close simply. You look forward to hearing from them.
If a question caught you out during the interview, this is also a legitimate place for one clarifying sentence: "On the reporting question, I should have mentioned that I rebuilt our monthly pack last year." One sentence, not a second attempt at the whole answer.
Timing and mechanics
Send it the same day or the next morning. After two days it reads as an afterthought, and after the decision is made it is simply too late.
Email each interviewer separately if you met several people and have their addresses, and vary the specific detail in each. Identical messages arriving in two inboxes on the same team is worse than one message. If you have no addresses, send it to the recruiter and ask them to pass on your thanks.
When to skip it
A generic message adds nothing and can mildly count against you, so if you genuinely have nothing specific to say, it is better to send nothing. Skip it too if the employer explicitly asked candidates not to make contact, or if the process is run entirely through a portal with no addresses given.
What it is not
A thank-you note is not a follow-up chase. It is one message, sent once, expecting no reply. If you hear nothing after the timeline they gave you, that is a separate message, sent later, asking politely about the process.
Send one, keep it short, make it specific, then leave it alone.
