The Philosophy
Most cards arrive on time. We don't.
The cards that arrive on time are expected. They fulfill an obligation. They are appreciated in the way that expected things are appreciated: completely, and without surprise.
The cards that arrive late are different. They arrive after the acute phase. The birthday is over, the grief has shifted, the opportunity has closed. The person has moved on from the thing, or begun to. And then the card arrives, and they are pulled briefly back to it — not to the pain, but to the fact that someone else was there too, even if they couldn't say so at the time.
We believe that "too late" is a more interesting category than it's usually treated as. Too late for a response. Too late to change anything. Still arrived. Still mattered. That combination — arrival after consequence — is the thing we're interested in.
We were there. You just weren't ready.
The lateness is not an apology. It's a philosophy. Some things can only be said after some time has passed. We give them a form.