If it is no longer common to do this, you have the potential to stand out all the more for performing this social courtesy. This is not one of those things lik

If it is no longer common to do this, you have the potential to stand out all the more for performing this social courtesy. This is not one of those things like wearing a suit to a shorts-and-sandals startup, where they say "Oh what a dweeb, he's totally a not a culture fit here." No one thinks badly of sending a simple thank you note. Don't write them a love letter or anything, but spend the 2 minutes to write a sincere custom note, and snail mail it if possible, or email it otherwise.