Prepare it alongside your interview answers, not as an afterthought
Reviewing your answers to common interview questions ahead of time makes it much easier to spot, right after the interview, which points are worth reinforcing or clarifying in a follow-up note.
It's really just a specific kind of work email
A thank-you note follows the same conventions as any professional email -- a clear subject line, appropriate tone, no typos. If you're unsure about tone or formatting, general email-etiquette guidance applies here too.
Frequently Asked Questions
Should I still send a thank-you email after a video interview?
Yes -- the same way as after any in-person interview. It can matter even more for a video interview, where you often have less face time to leave an impression.
Do I need to send one after every single interview round?
Yes, typically to whoever interviewed you at each stage. If there are several rounds, vary the content each time so it doesn't feel repetitive.