POP3.

POP3 is relevant when you want to understand how messages are downloaded from a mailbox into an email application. The practical questions concern what remains on the server, what is stored locally, and how another device sees the account afterward. A familiar inbox view can hide very different retention choices, so those settings deserve deliberate attention.

The POP mailbox overview introduces this approach, and the local email and retention guide explores the consequences. Use the articles to connect download behavior with your preferred workflow rather than assuming that POP automatically creates a permanent archive or removes every server copy.

Before experimenting, identify which application currently holds your older mail and whether attachments are actually available there. Test a small set of disposable messages and observe the server and client separately. Keep an independent recovery plan for local data, especially when an older computer contains correspondence that does not appear anywhere else.