# dead letter mail

> mail item for which there is no valid delivery address

**Wikidata**: [Q4114630](https://www.wikidata.org/wiki/Q4114630)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Dead_letter_mail)  
**Source**: https://4ort.xyz/entity/dead-letter-mail


## References

1. Freebase Data Dumps. 2013