You can add a hyperlink to your email message body in Business Central, using a ForNAV email layout. Dynamic content from the database can be used in the link name or URL.
Here is an example of an order tracking link shown in the email editor in the Business Central web client:
This link was created in the ForNAV layout as a normal textbox with a source expression. The source expression is an HTML anchor tag.
Here is a screenshot of the JavaScript behind the source expression: