Necessary? Not always. Appreciated? Yes! If you’re pressed for time, it’s better to get the thank-yous out by email or via a digital service that offers them (such as Evite Postmark) than not at all. However, the decision can also depend on the recipient: If your Great Aunt Carol isn’t on the computer often, then a handwritten note is the only way to go. Still in doubt? Write it out. An electronic thank-you or a written thank-you, it’s the words you write that count.