Can I log into my iCloud email on a different device?

Icloud mail address is an Apple ID signed in a device , you can use the same mail address and its password and account credentials on a different device , first you have to set up iCloud Set up iCloud on all your devices - Apple Support

And sign in with Apple ID and password Sign in with your Apple ID - Apple Support

Hello IDogCat,

We would like to see how we can help you with iCloud. You can access your email from any device browser at: iCloud

Cheers!