Create Business Email for free 
first you need to have domain 
if you don't have domain , you can buy it from godaddy, name cheap or anything

when you have the domain and go to this site (https://www.zoho.com/mail/zohomail-pricing.html)
scroll down they also have free option
sign up on it
by signing up , they will give you one email free for life time
after signing up , go to their website 
add your domain, they will ask for verification
if you don't know how to do it 
simple search on youtube how to verify zoho mail 
if you are using godaddy , go this video (https://youtu.be/8XYtk7_e-xg?si=LOehxKj3lyA2WAPn)

after doing it , you are done 
you have free email hosting for life time