Bespoke subscribe link?

Hey, all-- is there a way to get a “subscribe for free or paid” link in the button to be tied to a particular campaign? IE I’m reaching out to all the folks who are unsubscribed and inactive as of a certain date to see if they want to come back (“Here’s all the great stuff you’ve missed!”) and am entering those who resubscribe specifically from this one blast into a lil’ raffle. It would simplify my life if I can just download all the people who clicked on CAMPAIGN X LINK rather than having to filter through everyone who subscribed over a particular date range to figure out who of this group of people are the resubscribes (and thus possible raffle candidates).

Advice? I use Outpost, but don’t think they have this particular thing (but perhaps I’m wrong.)

My guess is that this is just a limitation of Ghost now and that I’ll have to do some manual sorting in spreadsheets, and that this will be much easier with a paid campaign, but I’d be thrilled to hear if I’m wrong…!

Thanks!
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I mean could you tie it to a coupon code they have to enter? Simplest solution maybe the best.