Drivers License Renewal In Ohio Why Would A DMV Mail You Your Drivers License?(Michigan Residents)?

Why would a DMV mail you your drivers license?(Michigan residents)? - drivers license renewal in ohio

My husband and I moved to Michigan. When he test for a license in Michigan, which is sent to us, instead of getting it for us now. From where I am (Ohio), if we do get a license, they both of us. Then, a little confused. Can you e-mail when renewing their license or to him at the time of renewal?