No. Samsung Metro XL is a 2G mobile phone.
Yes, you can access emails on Metro XL.
Yes, you will get a pair of headphones in the box as standard accessories.
You can store up to 1000 contacts in Metro XL. In addition, you can store up to 250 contacts in each of your sim card. So, if you are using 2 sim cards, in total you can store up to 1500 contacts.
Yes, you can use the LED Flash as torch also.