Does click-tracking hurt inboxing?

You've probably wondered this at some point: every tracked link in your email gets replaced by a long redirect URL, and something about that feels risky. Does it actually hurt your chances of hitting the inbox? The short answer is no. Not on its own.

Click tracking works by rewriting your links through a redirect domain. When someone clicks, the redirect server logs the event, then sends the reader to the original URL. Every major ESP does this automatically. Billions of tracked emails land in inboxes every single day without any issue.

So where does it go wrong? A few specific situations cause problems.

Shared tracking domains with a bad reputation. If you're on a shared sending plan and your ESP uses one tracking domain for all their customers, your links share a reputation with every other sender on that domain. If someone on that domain sends spam, the tracking domain can get flagged. You inherit that reputation whether you caused it or not. Custom tracking domains fix this entirely.

URL shorteners in the email body. Services like bit.ly or TinyURL have been heavily abused by spammers. Spam filters have seen enough of these to be suspicious by default. Stick to your ESP's built-in tracking or a properly configured custom domain instead.

Tracking domains not aligned with your sending domain. This one trips people up. If you send from captain@deepcurrent.io but your click-tracking redirects go through a completely unrelated domain, spam filters notice the mismatch. Your DKIM signature covers the sending domain, but a misaligned tracking domain sits outside that trust. Setting up a custom tracking subdomain (like click.deepcurrent.io) keeps everything aligned and builds its own reputation cleanly.

Malformed or broken redirect chains. A tracking link that bounces through multiple redirects, throws errors, or points somewhere unexpected looks wrong to both spam filters and security gateways. Keep the redirect chain short and make sure the final destination URL is clean and reachable.

If you're on a reputable ESP and haven't done anything unusual, standard click tracking is almost certainly not your deliverability problem. But if you've noticed click data that looks off or you're troubleshooting a deliverability dip, it's worth checking whether your tracking domain has ended up on any blocklists. You can run a quick check with our free blocklist checker to see if anything looks suspicious.