Domains
Website, email, and domain: how the pieces fit together
Your website and email can use the same domain while running on completely different systems. DNS is what connects the shared name to each service. Understanding that separation makes migrations and troubleshooting much safer.
The domain is shared identity, not a server
A domain such as example.ca can direct web traffic to one provider and email to another. The registrar controls the registration; authoritative DNS publishes the records that describe where each service should go.
This is why moving a website does not necessarily require moving email.
Website records and email records do different jobs
A and AAAA records commonly direct hostnames to IP addresses, while CNAME records alias one hostname to another. MX records tell senders which servers accept mail for the domain.
TXT records often contain SPF, DKIM, DMARC or verification information. Removing them during a website change can cause mail-delivery problems even if the site itself works.
Hosting panels can manage some or all of these pieces
A cPanel account may include website hosting, DNS tools and mailboxes in one interface. Another setup may use cPanel only for the website while Microsoft 365 or Google Workspace handles mail and a third party hosts DNS.
Neither is inherently wrong. The important part is knowing which system owns each responsibility.
Document the map before migrating anything
Write down the registrar, authoritative nameservers, website host, email provider and important DNS records. Then you can change one layer without guessing about the others.
That small diagram can save hours during a migration or outage.
Common questions
Can my website and email be hosted by different companies?
Yes. DNS can direct web and email traffic to completely different providers while both services continue using the same domain.