I bought an iPhone that was locked with someone else’s email address is there any way to unlock and use this device ?

Without the Apple ID and Password of the original owner, you will never bypass Activation Lock which is a theft prevention feature. Check these links...

How to remove Activation Lock - Apple Support

The All Too Common SAD Reality of Buying … - Apple Community

Don_97 wrote:

Will they be able to un lock it ?

Yes, but only if they were the owners of the phone and know the PW. This is unlikely. I would try contacting them but don't get your hopes up, if they were the owners they would have sold it to you unlocked.

Contact the seller but it is likely lost or stolen.

https://support.apple.com/en-us/HT201487

https://support.apple.com/en-us/HT201472

No, you will never be able to use the phone. You can recycle it at any Apple Store. Next time buy from Apple or authorized dealer. Apple has refurbished Macs on their web site at reduced prices.