I'm sure that if the prime bank of Burkina Faso really had $5.5m to spare that it could find a better use for it than sending it to a random person. It doesn't have that money spare, of course. "Mr Mala Mark" is a scammer. A scammer who is hoping to get his hands on your money by charging you fees. Just delete the email and don't reply.
FROM MR MALA MARK:
I am working with one of the prime bank here in Burkina Faso, can you help me repatriate the sun of (5.5 million dollar) to your oversea account based on percentage.
(1) Can you handle this project?
(2) Can I give you this trust?
(3) What will be your commission?
I expect your urgent response and call only if you can handle this project.
MR MALA MARK.
Private email: firstname.lastname@example.org
Telephone 00226 76-98-43-78.
Note: Strictly reply through my private email account if interest is shown.