You can get subscribers contact & Location information by setting a bot. First you’ve to set bot for user email,user phone, user location (see the below image). Select quick reply as template type and from the bottom give a name of button and select any of button type from button type field. [you can also add more button by click on add more button at the bottom right corner of the form.], whenever you get any email, location or phone number in messanger through bot setting, it’ll be stored in your database.
Click on the Contact & Location button to see your subscribers email/phone/location list. You can Download your subscribers email and phone numbers by click on Download email & phone list button. There are also three buttons through whom You can Update the default subscription template of email/phone/location (see the below image).