Maybe you ever think that setting up an email client is something very complicated and heavy to do, so you're very lazy to do so. Well, if this is your case, you could try nPOPQ, a mail client so simple that it doesn't need installation.
You just have to configure the basic parameters (SMPT, POP3, etc.) of the account from which you want to operate, and you will have it ready to start sending or receiving emails in that account, being extremely intuitive and practical to use.
Among its most interesting features, you can delete junk mail (spam) directly on the server, allow you to attach files, have your own address book, customize emails and, above all, take up much less resources (and space) than any other client mail.
You can free download nPOPQ 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.