Email from “Kenzie Brooks” in my inbox but the email is …

mailto:email address removed for privacy reasons

an email address “outlook_6720859FBEB7B349@outlook.c0️⃣m”

I cannot reply to the email. 

I would like to know if anyone knows what/how this person was able to email me with such a bizarre email, yet maintained her name for the header. 
is this a hack or something more nefarious?