Domain names are easily rememberable names for Internet resources such as websites and email addresses. Registering a domain name is a very important part of your online presence. There are now hundreds of domain name extensions including: .com, .net, .co, .org, .biz, .us, .guru, .company, .photography, .club, .xyz, .today, .rocks, and .tax.
Have you ever changed your Internet Service Provider and found yourself having to send out dozens or hundreds of new email address notices? What a nuisance! Email service providers, webmail sites, and traditional POP or IMAP serviceswant you to use their domain name as your email addressbecause it effectively locks you into them.
One solution is to set up email forwarding. Most email service providers, however, provide free forwarding for a limited period of time. Then you have to pay for it. Another simple solution is to set up an auto-response with your new address. Again, it will work only as long as you're paying. Worse, every spammer who has a list with your name on it will receive confirmation that your address is valid. Changing your email address is a nuisance but has the side benefit of removing yourself from the lists used by spammers.
If you have a personal domain name, however, you can use it as your email address as long as you keep the domain registered. For example, if you register myname.com you will have to send out change of address notices one more time but never again.
You will be able to direct email addressed to email@example.com, firstname.lastname@example.org, email@example.com to the same inbox or individual inboxes. In other words, each member of your family will be able to use myname.com as an email address but no one will be forced to share an inbox.
I will register domain names for your website and email at cost using the registration service of your choice. GoDaddy is the one I use for my own domain names.
You may encounter problems in migrating your existing email messages from one service provider to another, or to your local disk. I'll my best but be aware that some email services providers intertionally make this difficult or impossible. It's another form of lock-in.