LinkCleanhttps://example.com/article?mc_cid=abc123&mc_eid=78fa90&mc_tc=link-hero-1
After LinkCleanhttps://example.com/article
mc_tc
Email marketing · Mailchimp · introduced ~2007
What is mc_tc?
What mc_tc adds on top of mc_cid + mc_eid
Mailchimp's tracking can record three things per click: which campaign (mc_cid), which subscriber (mc_eid), and which specific link inside the email was clicked (mc_tc). The third dimension lets Mailchimp's analytics measure CTAs separately — e.g. how many people clicked the hero button vs the footer link in the same email.
mc_tc carries no personal identity on its own (it identifies the link, not the person). But it always rides alongside mc_eid, which does.
How LinkClean removes it
Default-on. Stripped with the rest of the Mailchimp trio.
Frequently asked
Is mc_tc personal data?
Not on its own — it names the link, not the recipient. But it ships alongside mc_eid (which is identity-bound).
Why does Mailchimp need a per-link ID?
Different CTAs inside the same email need separate click-counts for A/B testing and per-CTA conversion attribution.
Clean tracking on iPhone, in one tap.
LinkClean strips ~80 vendor-specific tracking parameters from any link, from any app's share sheet — and preserves functional ones like hl, t (YouTube timestamp), and q (search). No account, on-device.
