Hi
Karen,
Thanks
for your post.
Do
you mean you would like to use a custom domain to replace the onmicrosoft.com
domain? If so, you need to enter Microsoft Online Portal, add this domain to
your account, and then verify it.
For
details of how to use a custom domain, you can refer to following article as
reference:
If
I misunderstood anything, please feel free to correct me here.
Regards,
Ella
Huang