What do the following have in common?
Probably the last one gave it away - they are all American internet providers.
There are thousands of internet providers out there, each with their own proprietary email domains.
When you receive an email from a prospective tourist, you don't need to know their email to reply to them, the computer does it for you. I bet you don't even glance at it.
However for them to send you that email, especially if they type it manually, there's plenty of room for errors.
Just because you know how to spell "sympatico" doesn't mean you're average tourist does.
Just because you know that "nb.aibn.ca" is a common extension for Aliant business clients doesn't mean they know that.
Sign up for a hotmail.com email and forward it to your Outlook client.
Get a gmail.com account too.
Get a yahoo.ca and a yahoo.com
They are all free, and all easier to remember then the one you have now.
Even my mom knows Gmail :)