Copy care-of symbols for postal addresses and correspondence formatting. The care-of abbreviation c/o directs mail to a recipient through an intermediary person or organization. The care-of symbol ℅ provides a single-character alternative to writing out c/o in addresses. Use ℅ when sending mail to someone at a business address, hotel, or another person's residence. In international postal systems, the care-of notation ensures proper mail delivery when the recipient does not have a permanent address at the delivery location. Business correspondence and legal documents frequently use care-of addressing for proper routing. Click any care-of symbol to copy it to your clipboard and format your addresses correctly.