1. Abbreviation of care of.

1.1. To Anna McCalister c/o Bob Goodman (“Anna at Bob's address”).

1.2. Send your mail to me c/o Mr John Smith.

1.3. “But he sent it to you, didn't he?” “No, he sent it to himself c/o me.”

c/o, C/o, ℅ or‎ c/- are most commonly used for mailing, standing for the expression 'care of'.

Care of, usually abbreviated as c/o on envelopes, signifies an intermediary who is responsible for transferring a piece of mail between the postal system and the final addressee. For example when the addressee has no standard address, is under a corporate mail system, is at a friend's address where surname is required to identify the post box, or is being manually forwarded mail sent to a more accessible location.

#7 - Was du schreibst, stimmt zwar, passt aber nicht genau zu dieser 12 Jahre alten Anfrage. 

Die Verwendung von "c/o" entspricht nicht der Verwendung von "z. Hd.". Dieses Beispiel sollte dies verdeutlichen:

Musterfirma AG

z. Hd. Max Muster

vs.

Max Muster

c/o Musterfirma AG

Ja zur #11 von cassandra ...

:-)

PS : Edith wirft noch ein -t nach oben ... für "es reicht" ...