| Subject | English | German |
| commun. | post office protocol | Post-Office-Protocol |
| comp. | post office protocol | Postamtsprotokoll |
| comp., MS | Post Office Protocol version 3 | POP3 (An Internet standard protocol that allows a user to download e-mail from his or her inbox on a server to the client computer where messages are managed. This protocol works well for computers that are unable to maintain a continuous connection to a server) |