RE: Why is a hashtag used to add tracking code in Marketing Emails?
Hi,
This is expected behavior, hashtag is used to mark the location of the document, you can refer to the description in Wikipedia:
https://en.wikipedia.org/wiki/URI_fragment
The fragment identifier introduced by a hash mark # is the optional last part of a URL for a document. It is typically used to identify a portion of that document.
The question mark is usually used to transfer parameters, in your example you don't need to change it to a question mark.
If this helped you, I'd appreciate it if you'd mark this as a Verified Answer, which may in turn help others as well.
Best Regards,
Frank Gong