Dear reader6787.....

It is a bit difficult to say something since you didn't post all emails which you have received in the beginning...... , However

This message seems "Next of Kin" or "Refuge" scam combined with "Advanced Fee" fraud in Nigerian 419 Scam.

They have lots of tricks to have you pay for documentation, courier
or financial adviser/attoney fee, etc etc in near future to handle this
and pretend to remit the huge amount of money to your bank account.

Also the legal document they send to you are all fake, which can be easily forged.

So please NEVER contact them further.
Hope this will be the eternal and final lessen of yours.
We have sadly lots of criminals in the internet world!!

Awareriskinc