An MX (Mail Exchange) record is a DNS record that directs email to the correct mail server for a domain. When someone sends an email to user@example.com, the sending mail server looks up the MX records for example.com to find where to deliver the message. MX records have a priority value — lower numbers indicate higher priority. Multiple MX records provide redundancy and load balancing for email delivery.
FAQ
What is an MX record?
An MX record tells the internet which mail server should receive emails for your domain. Without proper MX records, email won't work for your domain.