Check my messaging from another device

Thank you very much, quick157.

Hello,
quick157 is absolutely right. Indeed, most ISPs offer POP3 mail servers, which generally do not allow messages to remain on the server.

The major drawback of the proposed solution is that over time, you will have half of your mail on one PC and the other half on the other... Quite a hassle to manage!

Two possibilities: If your PCs can share the same disk over the network, you can use that disk to store the emails, but the setup is a bit tricky.

Otherwise, look for an ISP that offers an IMAP server instead of POP3 and you can leave your messages on the server, allowing you to see the same thing from all the PCs you connect from. You might want to check out GMAIL; I believe they have IMAP support in the works.
See you!