The Etiquette of Thank You Cards
Launch library · evergreen read

Thank you cards carry their own quiet, largely unwritten etiquette worth understanding properly before sending one: a reasonably prompt sending after the actual occasion being marked, a message that goes noticeably beyond the printed sentiment already included on the card itself, and a tone matched carefully to the relationship rather than simply borrowed wholesale from the card's own generic, mass produced design.
The printed message already sitting on a card is only ever a starting point for the sender, never a genuine substitute for a personal line added afterward in their own words. Even a short handwritten addition of just a sentence or two can transform a generic, mass produced card into something that feels genuinely considered and personal to the specific recipient reading it.
There is no strict rule at all governing exactly how long a thank you card needs to be in order to count as genuine. What matters far more than length is that it reads as intentional rather than purely automatic, a small but genuinely real reflection of thought given specifically to the recipient of the card.