How can I add a unique and visible id to each of my subscribers? I'm guessing some kind of custom field but I'm stuck. I'm organizing a marathon and it would be smart to have each runner know their id from the start.
As you suspect, a custom field is the way to go. If you already have the ID (from your signup system perhaps) then you'd just import that into your list along with the email address and name.
Right, I get that - thanks. However, it'd be easier if I could avoid having a signup-system, since all I need is the ID. Could Campaign Monitor create this with each signup?
I still can't figure how to achieve this. How will I make sure the id is unique? I need all subscribers to have a unique id.
Also, I need to be able to send this id in the welcome mail.