missed delivery notice; undeliverable item notice
A slip left by a delivery service when the recipient is absent, indicating a delivery attempt and providing instructions for redelivery or pickup.
See also: 不在票
When I got home, there was a missed delivery notice in the mailbox.
I called the number on the undeliverable item notice and requested redelivery.
A shorter, more casual synonym for the same delivery notice. 不在連絡票 is the full, formal term often printed on the slip itself.
Compound of 不在 (absence) + 連絡 (contact) + 票 (slip, ticket). The term is a straightforward descriptive compound used by Japanese delivery services.