If you have an event with access codes and you want to send your ticket buyers a direct link rather than just the code, you can do so within your event's URL.
This will allow your ticket buyers to skip the "Redeem code" bit and go straight to purchasing tickets with the access code applied.
This will look something like this:
Here's an example:
If your event's URL (link) is https://billetto.co.uk/en/e/url-access-codes-tickets-315938 and the Access Code is "ENTERCODEHERE" then you can create a direct Access Code link by adding "/select/entercodehere" to the end of your event's link. Like so:
Here's how you add an Access Code to your tickets if you haven't done so already.