I have a friend who has a domain name and a web site. They currently use Hot mail and Outlook for their email addresses. They want to standardize to email address using their domain name. For example, if an email address was email@example.com or firstname.lastname@example.org, they want to use email@example.com for all email addresses for employees. They have a peer to peer network. No servers. Their website is hosted by some company.
I know some about POP and SMTP, but that's about it. I'm looking for any guidance or direction on this to help them get standardize. My first guess is that their website folks would do it, but I just not sure.