Notes 4.5 will include POP3 server capabilities so that users can read their Notes mail using any standard Internet mail reader such as Eudora or Netscape.
Notes 4.5 will not have client capabilities. However, there is a server add-on called POP3Fido from KEY Enterprise Solutions which will add this capability to Notes 4.x servers; this program lets Notes users read and reply to all their POP3 mail from with Notes via a single replication with their Notes server.
If you are running the OS/2 version of the Notes client, IBM has made available an early version of the POP3 client support that will be in Notes 4.6. Notes 4.6 has Eudora-like POP3 client support which you access via a location document on your Notes client.