Q: I didn't receive my verification email for my other locked apple ID. What should I do?

If its not verified, you will have an option to edit the email, so I would recommend just changing the Apple ID to an email that will get the verification and then just using the iCloud.com option in If you can't activate your iPhone, iPad, or iPod touch after installing iOS 9.3 - Apple Support to remove the activation lock.  Obviously, make sure you checked your junk or spam folder as well in your email before you try changing to a new email   I hope that helps!